private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.visionai.v1.Node.InputEdge,
            com.google.cloud.visionai.v1.Node.InputEdge.Builder,
            com.google.cloud.visionai.v1.Node.InputEdgeOrBuilder>
        getParentsFieldBuilder() {
      if (parentsBuilder_ == null) {
        parentsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.visionai.v1.Node.InputEdge,
                com.google.cloud.visionai.v1.Node.InputEdge.Builder,
                com.google.cloud.visionai.v1.Node.InputEdgeOrBuilder>(
                parents_, ((bitField0_ & 0x00000020) != 0), getParentForChildren(), isClean());
        parents_ = null;
      }
      return parentsBuilder_;
    }
<pre>
Parent node. Input node should not have parent node. For V1 Alpha1/Beta
only media warehouse node can have multiple parents, other types of nodes
will only have one parent.
</pre>

<code>repeated .google.cloud.visionai.v1.Node.InputEdge parents = 5;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Node.java