public static com.google.cloud.visionai.v1.VertexCustomConfig parseFrom(
      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
  }
<pre>
Optional. By setting the configuration_input_topic, processor will
subscribe to given topic, only pub/sub topic is supported now. Example
channel:
//pubsub.googleapis.com/projects/visionai-testing-stable/topics/test-topic
message schema should be:
message Message {
// The ID of the stream that associates with the application instance.
string stream_id = 1;
// The target fps. By default, the custom processor will *not* send any
data to the Vertex Prediction container. Note that once the
dynamic_config_input_topic is set, max_prediction_fps will not work and be
preceded by the fps set inside the topic.
int32 fps = 2;
}
</pre>

<code>optional string dynamic_config_input_topic = 6 [(.google.api.field_behavior) = OPTIONAL];
</code>

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