public com.google.spanner.v1.PlanNode.ChildLink getChildLinks(int index) {
    return childLinks_.get(index);
  }
public com . google . spanner . v1 . PlanNode . ChildLink getChildLinks ( int index ) { return childLinks_ . get ( index ) ; }
<pre>
List of child node `index`es and their relationship to this parent.
</pre>

<code>repeated .google.spanner.v1.PlanNode.ChildLink child_links = 4;</code>