feat(discoveryengine): update the api

#### discoveryengine:v1

The following keys were deleted:
- schemas.GoogleCloudDiscoveryengineV1alphaCustomTuningModel (Total Keys: 16)
- schemas.GoogleCloudDiscoveryengineV1alphaListCustomModelsResponse (Total Keys: 4)
- schemas.GoogleCloudDiscoveryengineV1betaCustomTuningModel (Total Keys: 16)
- schemas.GoogleCloudDiscoveryengineV1betaListCustomModelsResponse (Total Keys: 4)

#### discoveryengine:v1alpha

The following keys were deleted:
- schemas.GoogleCloudDiscoveryengineV1betaCustomTuningModel (Total Keys: 16)
- schemas.GoogleCloudDiscoveryengineV1betaListCustomModelsResponse (Total Keys: 4)

#### discoveryengine:v1beta

The following keys were deleted:
- schemas.GoogleCloudDiscoveryengineV1alphaCustomTuningModel (Total Keys: 16)
- schemas.GoogleCloudDiscoveryengineV1alphaListCustomModelsResponse (Total Keys: 4)

Author: yoshi-automation

docs/dyn/discoveryengine_v1.projects.locations.collections.engines.html

@@ -157,7 +157,7 @@ <h3>Method Details</h3>
   ],
   &quot;disableAnalytics&quot;: True or False, # Optional. Whether to disable analytics for searches performed on this engine.
   &quot;displayName&quot;: &quot;A String&quot;, # Required. The display name of the engine. Should be human readable. UTF-8 encoded string with limit of 1024 characters.
-  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: If unspecified, default to `GENERIC`. Vertical on Engine has to match vertical of the DataStore linked to the engine.
+  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: Vertical on Engine has to match vertical of the DataStore linked to the engine.
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The fully qualified resource name of the engine. This field must be a UTF-8 encoded string with a length limit of 1024 characters. Format: `projects/{project}/locations/{location}/collections/{collection}/engines/{engine}` engine should be 1-63 characters, and valid characters are /a-z0-9*/. Otherwise, an INVALID_ARGUMENT error is returned.
   &quot;searchEngineConfig&quot;: { # Configurations for a Search Engine. # Configurations for the Search Engine. Only applicable if solution_type is SOLUTION_TYPE_SEARCH.
     &quot;searchAddOns&quot;: [ # The add-on that this search engine enables.
@@ -270,7 +270,7 @@ <h3>Method Details</h3>
   ],
   &quot;disableAnalytics&quot;: True or False, # Optional. Whether to disable analytics for searches performed on this engine.
   &quot;displayName&quot;: &quot;A String&quot;, # Required. The display name of the engine. Should be human readable. UTF-8 encoded string with limit of 1024 characters.
-  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: If unspecified, default to `GENERIC`. Vertical on Engine has to match vertical of the DataStore linked to the engine.
+  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: Vertical on Engine has to match vertical of the DataStore linked to the engine.
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The fully qualified resource name of the engine. This field must be a UTF-8 encoded string with a length limit of 1024 characters. Format: `projects/{project}/locations/{location}/collections/{collection}/engines/{engine}` engine should be 1-63 characters, and valid characters are /a-z0-9*/. Otherwise, an INVALID_ARGUMENT error is returned.
   &quot;searchEngineConfig&quot;: { # Configurations for a Search Engine. # Configurations for the Search Engine. Only applicable if solution_type is SOLUTION_TYPE_SEARCH.
     &quot;searchAddOns&quot;: [ # The add-on that this search engine enables.
@@ -324,7 +324,7 @@ <h3>Method Details</h3>
       ],
       &quot;disableAnalytics&quot;: True or False, # Optional. Whether to disable analytics for searches performed on this engine.
       &quot;displayName&quot;: &quot;A String&quot;, # Required. The display name of the engine. Should be human readable. UTF-8 encoded string with limit of 1024 characters.
-      &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: If unspecified, default to `GENERIC`. Vertical on Engine has to match vertical of the DataStore linked to the engine.
+      &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: Vertical on Engine has to match vertical of the DataStore linked to the engine.
       &quot;name&quot;: &quot;A String&quot;, # Immutable. The fully qualified resource name of the engine. This field must be a UTF-8 encoded string with a length limit of 1024 characters. Format: `projects/{project}/locations/{location}/collections/{collection}/engines/{engine}` engine should be 1-63 characters, and valid characters are /a-z0-9*/. Otherwise, an INVALID_ARGUMENT error is returned.
       &quot;searchEngineConfig&quot;: { # Configurations for a Search Engine. # Configurations for the Search Engine. Only applicable if solution_type is SOLUTION_TYPE_SEARCH.
         &quot;searchAddOns&quot;: [ # The add-on that this search engine enables.
@@ -385,7 +385,7 @@ <h3>Method Details</h3>
   ],
   &quot;disableAnalytics&quot;: True or False, # Optional. Whether to disable analytics for searches performed on this engine.
   &quot;displayName&quot;: &quot;A String&quot;, # Required. The display name of the engine. Should be human readable. UTF-8 encoded string with limit of 1024 characters.
-  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: If unspecified, default to `GENERIC`. Vertical on Engine has to match vertical of the DataStore linked to the engine.
+  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: Vertical on Engine has to match vertical of the DataStore linked to the engine.
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The fully qualified resource name of the engine. This field must be a UTF-8 encoded string with a length limit of 1024 characters. Format: `projects/{project}/locations/{location}/collections/{collection}/engines/{engine}` engine should be 1-63 characters, and valid characters are /a-z0-9*/. Otherwise, an INVALID_ARGUMENT error is returned.
   &quot;searchEngineConfig&quot;: { # Configurations for a Search Engine. # Configurations for the Search Engine. Only applicable if solution_type is SOLUTION_TYPE_SEARCH.
     &quot;searchAddOns&quot;: [ # The add-on that this search engine enables.
@@ -428,7 +428,7 @@ <h3>Method Details</h3>
   ],
   &quot;disableAnalytics&quot;: True or False, # Optional. Whether to disable analytics for searches performed on this engine.
   &quot;displayName&quot;: &quot;A String&quot;, # Required. The display name of the engine. Should be human readable. UTF-8 encoded string with limit of 1024 characters.
-  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: If unspecified, default to `GENERIC`. Vertical on Engine has to match vertical of the DataStore linked to the engine.
+  &quot;industryVertical&quot;: &quot;A String&quot;, # The industry vertical that the engine registers. The restriction of the Engine industry vertical is based on DataStore: Vertical on Engine has to match vertical of the DataStore linked to the engine.
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The fully qualified resource name of the engine. This field must be a UTF-8 encoded string with a length limit of 1024 characters. Format: `projects/{project}/locations/{location}/collections/{collection}/engines/{engine}` engine should be 1-63 characters, and valid characters are /a-z0-9*/. Otherwise, an INVALID_ARGUMENT error is returned.
   &quot;searchEngineConfig&quot;: { # Configurations for a Search Engine. # Configurations for the Search Engine. Only applicable if solution_type is SOLUTION_TYPE_SEARCH.
     &quot;searchAddOns&quot;: [ # The add-on that this search engine enables.