@java.lang.Override
    public com.google.protobuf.ByteString getClientIdBytes() {
      java.lang.Object ref = clientId_;
      if (ref instanceof java.lang.String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        clientId_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
The Application ID for the app registered in Microsoft Azure Portal.
The application must also be configured with MS Graph permissions
"Files.ReadAll", "Sites.ReadAll" and BrowserSiteLists.Read.All.
</pre>

<code>string client_id = 1;</code>

@return The bytes for clientId.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/SharePointSources.java