code: public WyalFile.Name convert(QualifiedName id, String suffix, SyntacticItem context) {
  		return convert(id.getUnit(), id.getName().get().concat(suffix), context);
  	}
docs: Convert a qualified name along with an additional suffix into one suitable
  for a WyAL file.
  
  @param id
  @param suffix
  @param context
  @return