POST (Rack::Request)

    # File lib/rack/request.rb, line 107
        def POST
          if @env["rack.request.form_input"].eql? @env["rack.input"]
            @env["rack.request.form_hash"]
          elsif form_data?
            @env["rack.request.form_input"] = @env["rack.input"]
            unless @env["rack.request.form_hash"] =
                Utils::Multipart.parse_multipart(env)
              @env["rack.request.form_vars"] = @env["rack.input"].read
              @env["rack.request.form_hash"] = Utils.parse_query(@env["rack.request.form_vars"])
              @env["rack.input"].rewind if @env["rack.input"].respond_to?(:rewind)
            end
            @env["rack.request.form_hash"]
          else
            {}
          end
        end