code: public com.google.protobuf.ByteString
        getCanonicalScopesBytes() {
      java.lang.Object ref = canonicalScopes_;
      if (ref instanceof java.lang.String) {
        com.google.protobuf.ByteString b = 
            com.google.protobuf.ByteString.copyFromUtf8(
                (java.lang.String) ref);
        canonicalScopes_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
docs: <pre>
  The list of publicly documented OAuth scopes that are allowed access. An
  OAuth token containing any of these scopes will be accepted.
  Example:
  canonical_scopes: https://www.googleapis.com/auth/calendar,
  https://www.googleapis.com/auth/calendar.read
  </pre>
  
  <code>string canonical_scopes = 1;</code>