code: protected int findMember( String name)
      {
      int memberCount = name==null? 0 : members_.size();
      int i;
      for( i = 0; i < memberCount && !name.equals( members_.get(i).getName()); i++);
      return i < memberCount? i : -1;
      }
docs: Returns the index of the member variable with the given name.