code: private boolean firstChild(Parse child, Parse parent) {
      return ParserME.collapsePunctuation(parent.getChildren(),punctSet)[0] == child;
    }
docs: Returns true if the specified child is the first child of the specified parent.
  @param child The child parse.
  @param parent The parent parse.
  @return true if the specified child is the first child of the specified parent; false otherwise.