code: @Override
  	public Collection<BioPAXElement> generate(Match match, int... ind)
  	{
  		Collection<BioPAXElement> gen = con.generate(match, ind);
  		gen.add(match.get(ind[selfIndex]));
  		return gen;
  	}
docs: Gets the first mapped element along with the generated elements of wrapped constraint.
  @param match current pattern match
  @param ind mapped indices
  @return first mapped element along with the generated elements of wrapped constraint