public Builder setProducerNode(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        producerNode_ = value;
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }
<pre>
The name of graph node who produces the output resource name.
For example:
output_resource:
/projects/123/locations/us-central1/clusters/456/streams/output-application-789-stream-a-occupancy-counting
producer_node: occupancy-counting
</pre>

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

@param value The producerNode to set.
@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Instance.java