private com.google.protobuf.SingleFieldBuilderV3<
              com.google.protobuf.Timestamp,
              com.google.protobuf.Timestamp.Builder,
              com.google.protobuf.TimestampOrBuilder>
          getDeployTimeFieldBuilder() {
        if (deployTimeBuilder_ == null) {
          deployTimeBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.protobuf.Timestamp,
                  com.google.protobuf.Timestamp.Builder,
                  com.google.protobuf.TimestampOrBuilder>(
                  getDeployTime(), getParentForChildren(), isClean());
          deployTime_ = null;
        }
        return deployTimeBuilder_;
      }
<pre>
Timestamp when the engine be deployed
</pre>

<code>.google.protobuf.Timestamp deploy_time = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Application.java