# File lib/simple_form/wrappers/leaf.rb, line 12
      def render(input)
        method = input.method(@namespace)

        if method.arity.zero?
          ActiveSupport::Deprecation.warn(SimpleForm::CUSTOM_INPUT_DEPRECATION_WARN % { name: @namespace })

          method.call
        else
          method.call(@options)
        end
      end