docs: docs update (#911)

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Fixes #<issue_number_goes_here> 🦕
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+
+<h1><a href="displayvideo_v1.html">Display & Video 360 API</a> . <a href="displayvideo_v1.sdfdownloadtasks.html">sdfdownloadtasks</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="displayvideo_v1.sdfdownloadtasks.operations.html">operations()</a></code>
+</p>
+<p class="firstline">Returns the operations Resource.</p>
+
+<p class="toc_element">
+  <code><a href="#create">create(body=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Creates an SDF Download Task. Returns an</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="create">create(body=None, x__xgafv=None)</code>
+  <pre>Creates an SDF Download Task. Returns an
+Operation.
+
+An SDF Download Task is a long-running, asynchronous operation. The
+metadata type of this operation is
+SdfDownloadTaskMetadata. If the request is successful, the
+response type of the operation is
+SdfDownloadTask. The response will not include the download files,
+which must be retrieved with
+media.download. The state of
+operation can be retrieved with
+sdfdownloadtask.operations.get.
+
+Any errors can be found in the
+error.message. Note
+that error.details is expected to be
+empty.
+
+Args:
+  body: object, The request body.
+    The object takes the form of:
+
+{ # Request message for [SdfDownloadTaskService.CreateSdfDownloadTask].
+    &quot;advertiserId&quot;: &quot;A String&quot;, # The ID of the advertiser to download SDF for.
+    &quot;parentEntityFilter&quot;: { # A filtering option that filters on selected file types belonging to a chosen # Filters on selected file types. The entities in each file are filtered
+        #  by a chosen set of filter entities. The filter entities must be the same
+        #  type as, or a parent type of, the selected file types.
+        # set of filter entities.
+      &quot;fileType&quot;: [ # Required. File types that will be returned.
+        &quot;A String&quot;,
+      ],
+      &quot;filterType&quot;: &quot;A String&quot;, # Required. Filter type used to filter fetched entities.
+      &quot;filterIds&quot;: [ # The IDs of the specified filter type. This is used to filter entities to
+          # fetch. If filter type is not `FILTER_TYPE_NONE`, at least one ID must be
+          # specified.
+        &quot;A String&quot;,
+      ],
+    },
+    &quot;idFilter&quot;: { # A filtering option that filters entities by their entity IDs. # Filters on entities by their entity IDs.
+      &quot;mediaProductIds&quot;: [ # Media Products to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+      &quot;lineItemIds&quot;: [ # Line Items to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+      &quot;adGroupAdIds&quot;: [ # TrueView Ads to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+      &quot;adGroupIds&quot;: [ # TrueView Ad Groups to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+      &quot;campaignIds&quot;: [ # Campaigns to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+      &quot;insertionOrderIds&quot;: [ # Insertion Orders to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest.
+        &quot;A String&quot;,
+      ],
+    },
+    &quot;partnerId&quot;: &quot;A String&quot;, # The ID of the partner to download SDF for.
+    &quot;version&quot;: &quot;A String&quot;, # Required. The SDF version of the downloaded file. If set to
+        # `SDF_VERSION_UNSPECIFIED`, this will default to the version specified by
+        # the advertiser or partner identified by `root_id`. An advertiser inherits
+        # its SDF version from its partner unless configured otherwise.
+    &quot;inventorySourceFilter&quot;: { # A filtering option for filtering on Inventory Source entities. # Filters on Inventory Sources by their IDs.
+      &quot;inventorySourceIds&quot;: [ # Inventory Sources to download by ID. All IDs must belong to the same
+          # Advertiser or
+          # Partner specified in
+          # CreateSdfDownloadTaskRequest. Leave empty to download all Inventory
+          # Sources for the selected Advertiser or Partner.
+        &quot;A String&quot;,
+      ],
+    },
+  }
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # This resource represents a long-running operation that is the result of a
+      # network API call.
+    &quot;response&quot;: { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      &quot;a_key&quot;: &quot;&quot;, # Properties of the object. Contains field @type with type URL.
+    },
+    &quot;name&quot;: &quot;A String&quot;, # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+    &quot;error&quot;: { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+        # three pieces of data: error code, error message, and error details.
+        #
+        # You can find out more about this error model and how to work with it in the
+        # [API Design Guide](https://cloud.google.com/apis/design/errors).
+      &quot;code&quot;: 42, # The status code, which should be an enum value of google.rpc.Code.
+      &quot;message&quot;: &quot;A String&quot;, # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      &quot;details&quot;: [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          &quot;a_key&quot;: &quot;&quot;, # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    &quot;metadata&quot;: { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      &quot;a_key&quot;: &quot;&quot;, # Properties of the object. Contains field @type with type URL.
+    },
+    &quot;done&quot;: True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+  }</pre>
+</div>
+
+</body></html>
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