# File lib/aws/xml_grammar.rb, line 653
      def consume_initial_frame(child_frame)
        if child_frame.forced?
          add_mutators_for(child_frame)
          if child_frame.collected?
            invoke_setter(child_frame, child_frame.initial_collection)
          else
            # this allows nested forced elements to appear
            invoke_setter(child_frame, child_frame.value)
          end
        end
      end