private com.google.protobuf.MapFieldLite<java.lang.String, java.lang.String>
        internalGetMutableAuthHeaders() {
          if (!authHeaders_.isMutable()) {
            authHeaders_ = authHeaders_.mutableCopy();
          }
          return authHeaders_;
        }
private com.google.protobuf.MapFieldLite<java.lang.String, java.lang.String>
        internalGetMutableAuthHeaders()