public com.google.protobuf.ByteString
      getCallerSuppliedUserAgentBytes() {
    java.lang.Object ref = callerSuppliedUserAgent_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b = 
          com.google.protobuf.ByteString.copyFromUtf8(
              (java.lang.String) ref);
      callerSuppliedUserAgent_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
public com . google . protobuf . ByteString getCallerSuppliedUserAgentBytes ( ) { java . lang . Object ref = callerSuppliedUserAgent_ ; if ( ref instanceof java . lang . String ) { com . google . protobuf . ByteString b = com . google . protobuf . ByteString . copyFromUtf8 ( ( java . lang . String ) ref ) ; callerSuppliedUserAgent_ = b ; return b ; } else { return ( com . google . protobuf . ByteString ) ref ; } }
<pre>
The user agent of the caller.
This information is not authenticated and should be treated accordingly.
For example:
+   `google-api-python-client/1.4.0`:
The request was made by the Google API client for Python.
+   `Cloud SDK Command Line Tool apitools-client/1.0 gcloud/0.9.62`:
The request was made by the Google Cloud SDK CLI (gcloud).
+   `AppEngine-Google; (+http://code.google.com/appengine; appid: s~my-project`:
The request was made from the `my-project` App Engine app.
</pre>

<code>string caller_supplied_user_agent = 2;</code>