# File lib/simple_form/inputs/collection_select_input.rb, line 5
      def input(wrapper_options = nil)
        label_method, value_method = detect_collection_methods

        merged_input_options = merge_wrapper_options(input_html_options, wrapper_options)

        @builder.collection_select(
          attribute_name, collection, value_method, label_method,
          input_options, merged_input_options
        )
      end