chore: Update discovery artifacts (#1477)

## Deleted keys were detected in the following stable discovery artifacts:
apigee v1 https://github.com/googleapis/google-api-python-client/commit/4485c5f3b32c9bda4f50a2a96c5870414f7d870f
sqladmin v1 https://github.com/googleapis/google-api-python-client/commit/41d51e34759b181692ed96d9d490a9cfc5a28459

## Deleted keys were detected in the following pre-stable discovery artifacts:
sqladmin v1beta4 https://github.com/googleapis/google-api-python-client/commit/41d51e34759b181692ed96d9d490a9cfc5a28459
transcoder v1beta1 https://github.com/googleapis/google-api-python-client/commit/1e0b0854e31f52013a8c5423efbd5e34c953e08c

## Discovery Artifact Change Summary:
feat(accesscontextmanager): update the api https://github.com/googleapis/google-api-python-client/commit/30216a669249442cac8f0fb8bb347b1352d8f087
feat(alertcenter): update the api https://github.com/googleapis/google-api-python-client/commit/39b084706537111e8403be6e69f0fc9d82b2f383
feat(apigee): update the api https://github.com/googleapis/google-api-python-client/commit/4485c5f3b32c9bda4f50a2a96c5870414f7d870f
feat(bigquery): update the api https://github.com/googleapis/google-api-python-client/commit/304bbde2360066caf55575e3be5a04fdc8bf8b09
feat(chromemanagement): update the api https://github.com/googleapis/google-api-python-client/commit/0ba28b47236a81a996a3607567b61ab38150617d
feat(cloudasset): update the api https://github.com/googleapis/google-api-python-client/commit/792aa5593ea64ceb4b565e950e153e396274b3b8
feat(cloudbuild): update the api https://github.com/googleapis/google-api-python-client/commit/6b06387ca29e76d26f257c7a4eb6864fe27e082e
feat(cloudchannel): update the api https://github.com/googleapis/google-api-python-client/commit/0b0444ea192f79c5564745be8b1d52b52a74d1fb
feat(cloudkms): update the api https://github.com/googleapis/google-api-python-client/commit/7dc278459cbd32bf15b39633327743cfa0beeea3
feat(composer): update the api https://github.com/googleapis/google-api-python-client/commit/92131bff38ab7644e549f3d71f9c0a84755455db
feat(container): update the api https://github.com/googleapis/google-api-python-client/commit/53d8b4b3e3c5d16ffd14ba1af1cf1769d9249067
feat(containeranalysis): update the api https://github.com/googleapis/google-api-python-client/commit/9ab94f3f4c2ccafdf8b298dad8c6a5c2aa61a606
feat(dialogflow): update the api https://github.com/googleapis/google-api-python-client/commit/b49bfdaedbed3378b061e85f937a36e97732fcd4
feat(iam): update the api https://github.com/googleapis/google-api-python-client/commit/0832247d126965b472a271167028499f015de1ae
feat(metastore): update the api https://github.com/googleapis/google-api-python-client/commit/dd83236343d603e964613b16e9afa25eff60f97c
feat(ondemandscanning): update the api https://github.com/googleapis/google-api-python-client/commit/6ffbe182425ec217230fc083e217676e915bb786
feat(osconfig): update the api https://github.com/googleapis/google-api-python-client/commit/e079d43be4291ca10be7caf432012c6553e0398e
feat(oslogin): update the api https://github.com/googleapis/google-api-python-client/commit/d3ec653bdd293a63ae0b3772ce83e1fda73d5de5
feat(pubsub): update the api https://github.com/googleapis/google-api-python-client/commit/06dfff22baec2551508b93e29e4c36fa442ab299
feat(pubsublite): update the api https://github.com/googleapis/google-api-python-client/commit/4287a7d537741391a9afe9e669b98010ed4fc0ab
feat(recaptchaenterprise): update the api https://github.com/googleapis/google-api-python-client/commit/ebfeb8fc00a1c6a8603b35640845c5cdacf53cb2
feat(recommender): update the api https://github.com/googleapis/google-api-python-client/commit/01f2d6cc989ce337537a51ead8ffd3d6fc7e6c5d
feat(speech): update the api https://github.com/googleapis/google-api-python-client/commit/601afcf08fd96421b64ef4c6f098f09f0748ce69
feat(sqladmin): update the api https://github.com/googleapis/google-api-python-client/commit/41d51e34759b181692ed96d9d490a9cfc5a28459
feat(tagmanager): update the api https://github.com/googleapis/google-api-python-client/commit/47a522aac79ae9283a0c7ee7a2d0716e605d8c21
feat(transcoder): update the api https://github.com/googleapis/google-api-python-client/commit/1e0b0854e31f52013a8c5423efbd5e34c953e08c
diff --git a/docs/dyn/dialogflow_v3.projects.locations.agents.environments.experiments.html b/docs/dyn/dialogflow_v3.projects.locations.agents.environments.experiments.html
index bedf720..edaf4c8 100644
--- a/docs/dyn/dialogflow_v3.projects.locations.agents.environments.experiments.html
+++ b/docs/dyn/dialogflow_v3.projects.locations.agents.environments.experiments.html
@@ -133,7 +133,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -159,6 +159,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -202,7 +219,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -228,6 +245,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -296,7 +330,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -322,6 +356,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -376,7 +427,7 @@
       "description": "A String", # The human-readable description of the experiment.
       "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
       "endTime": "A String", # End time of this experiment.
-      "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+      "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
       "lastUpdateTime": "A String", # Last update time of this experiment.
       "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
       "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -402,6 +453,23 @@
           },
         ],
       },
+      "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+        "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+        "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+        "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+          { # A single rollout step with specified traffic allocation.
+            "displayName": "A String", # The name of the rollout step;
+            "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+            "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+          },
+        ],
+      },
+      "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+      "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+        "startTime": "A String", # Start time of the current step.
+        "step": "A String", # Display name of the current auto rollout step.
+        "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+      },
       "startTime": "A String", # Start time of this experiment.
       "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
       "variantsHistory": [ # The history of updates to the experiment variants.
@@ -464,7 +532,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -490,6 +558,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -534,7 +619,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -560,6 +645,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -616,7 +718,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -642,6 +744,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.
@@ -698,7 +817,7 @@
   "description": "A String", # The human-readable description of the experiment.
   "displayName": "A String", # Required. The human-readable name of the experiment (unique in an environment). Limit of 64 characters.
   "endTime": "A String", # End time of this experiment.
-  "experimentLength": "A String", # LINT.IfChange(default_experiment_length) Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days. LINT.ThenChange(//depot/google3/cloud/ml/api/conversation/analytics/compute.cc:default_experiment_length)
+  "experimentLength": "A String", # Maximum number of days to run the experiment/rollout. If auto-rollout is not enabled, default value and maximum will be 30 days. If auto-rollout is enabled, default value and maximum will be 6 days.
   "lastUpdateTime": "A String", # Last update time of this experiment.
   "name": "A String", # The name of the experiment. Format: projects//locations//agents//environments//experiments/..
   "result": { # The inference result which includes an objective metric to optimize and the confidence interval. # Inference result of the experiment.
@@ -724,6 +843,23 @@
       },
     ],
   },
+  "rolloutConfig": { # The configuration for auto rollout. # The configuration for auto rollout. If set, there should be exactly two variants in the experiment (control variant being the default version of the flow), the traffic allocation for the non-control variant will gradually increase to 100% when conditions are met, and eventually replace the control variant to become the default version of the flow.
+    "failureCondition": "A String", # The conditions that are used to evaluate the failure of a rollout step. If not specified, no rollout steps will fail. E.g. "containment_rate < 10% OR average_turn_count < 3". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutCondition": "A String", # The conditions that are used to evaluate the success of a rollout step. If not specified, all rollout steps will proceed to the next one unless failure conditions are met. E.g. "containment_rate > 60% AND callback_rate < 20%". See the [conditions reference](https://cloud.google.com/dialogflow/cx/docs/reference/condition).
+    "rolloutSteps": [ # Steps to roll out a flow version. Steps should be sorted by percentage in ascending order.
+      { # A single rollout step with specified traffic allocation.
+        "displayName": "A String", # The name of the rollout step;
+        "minDuration": "A String", # The minimum time that this step should last. Should be longer than 1 hour. If not set, the default minimum duration for each step will be 1 hour.
+        "trafficPercent": 42, # The percentage of traffic allocated to the flow version of this rollout step. (0%, 100%].
+      },
+    ],
+  },
+  "rolloutFailureReason": "A String", # The reason why rollout has failed. Should only be set when state is ROLLOUT_FAILED.
+  "rolloutState": { # State of the auto-rollout process. # State of the auto rollout process.
+    "startTime": "A String", # Start time of the current step.
+    "step": "A String", # Display name of the current auto rollout step.
+    "stepIndex": 42, # Index of the current step in the auto rollout steps list.
+  },
   "startTime": "A String", # Start time of this experiment.
   "state": "A String", # The current state of the experiment. Transition triggered by Experiments.StartExperiment: DRAFT->RUNNING. Transition triggered by Experiments.CancelExperiment: DRAFT->DONE or RUNNING->DONE.
   "variantsHistory": [ # The history of updates to the experiment variants.