Fix method doc signatures for multiline required parameters (#374)

* Fix method doc signatures for multiline required parameters.

Existing doc generator failed to recognize parameters as required when parameter descriptions
extended over more than one line. Besides presenting incorrect information, resulting
inconsistencies broke checks for automated sample generation.

* Regen docs
diff --git a/docs/dyn/ml_v1.projects.operations.html b/docs/dyn/ml_v1.projects.operations.html
index 3d1bd3c..be892da 100644
--- a/docs/dyn/ml_v1.projects.operations.html
+++ b/docs/dyn/ml_v1.projects.operations.html
@@ -172,15 +172,6 @@
 
     { # This resource represents a long-running operation that is the result of a
       # network API call.
-    "metadata": { # 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.
-      "a_key": "", # Properties of the object. Contains field @type with type URL.
-    },
-    "done": 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.
     "response": { # 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
@@ -191,6 +182,15 @@
         # `TakeSnapshotResponse`.
       "a_key": "", # Properties of the object. Contains field @type with type URL.
     },
+    "metadata": { # 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.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "done": 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.
     "name": "A String", # 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 have the format of `operations/some/unique/name`.
@@ -285,15 +285,6 @@
     "operations": [ # A list of operations that matches the specified filter in the request.
       { # This resource represents a long-running operation that is the result of a
           # network API call.
-        "metadata": { # 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.
-          "a_key": "", # Properties of the object. Contains field @type with type URL.
-        },
-        "done": 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.
         "response": { # 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
@@ -304,6 +295,15 @@
             # `TakeSnapshotResponse`.
           "a_key": "", # Properties of the object. Contains field @type with type URL.
         },
+        "metadata": { # 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.
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+        "done": 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.
         "name": "A String", # 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 have the format of `operations/some/unique/name`.