public List<IParseTree> getChildren()
  {
    return (List<IParseTree>) (_children == null ? Collections.<IParseTree>emptyList() : Collections.unmodifiableList( _children ));
  }
public List < IParseTree > getChildren ( ) { return ( List < IParseTree > ) ( _children == null ? Collections . < IParseTree > emptyList ( ) : Collections . unmodifiableList ( _children ) ) ; }
@return The list of child locations covered by this location.