parse_render_nodes

# File actionview/lib/action_view/ripper_ast_parser.rb, line 188
      def parse_render_nodes(code)
        parser = RenderCallExtractor.new(code)
        parser.parse

        parser.render_calls.group_by(&:first).to_h do |method, nodes|
          [ method.to_sym, nodes.collect { |v| v[1] } ]
        end
      end