https://docs.cloud.google.com/java/docs/reference/google-cloud-discoveryengine/latest/com.google.cloud.discoveryengine.v1beta.AnswerQueryRequest.SearchSpec.InputCase
Enum AnswerQueryRequest.SearchSpec.InputCase (0.87.0) | Java client libraries | Google Cloud...
java clientenum
https://docs.cloud.google.com/java/docs/reference/google-cloud-dialogflow-cx/latest/com.google.cloud.dialogflow.cx.v3.QueryInput.InputCase
Enum QueryInput.InputCase (0.102.0) | Java client libraries | Google Cloud Documentation
java clientgoogle cloudenum