body=

# File actionpack/lib/action_dispatch/http/response.rb, line 384
    def body=(body)
      # Prevent ActionController::Metal::Live::Response from committing the response prematurely.
      synchronize do
        if body.respond_to?(:to_str)
          @stream = build_buffer(self, [body])
        elsif body.respond_to?(:to_path)
          @stream = body
        elsif body.respond_to?(:to_ary)
          @stream = build_buffer(self, body)
        else
          @stream = body
        end
      end
    end