@java.lang.Override
  public int getParentsCount() {
    return parents_.size();
  }
<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