public static com.google.cloud.visionai.v1.CreateCollectionRequest parseDelimitedFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
        PARSER, input, extensionRegistry);
  }
<pre>
Optional. The ID to use for the collection, which will become the final
component of the resource name if user choose to specify. Otherwise,
collection id will be generated by system.

This value should be up to 55 characters, and valid characters
are /[a-z][0-9]-/. The first character must be a letter, the last could be
a letter or a number.
</pre>

<code>optional string collection_id = 3 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for collectionId.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CreateCollectionRequest.java