src/AbstractTransport.php
public function withMethod($method)
    {
        $object = clone $this;
        /**
         *  Check available Method
         */
        $old_method  = $method;
        if (($method = $object->allowedMethod($method)) === false || !is_string($method)) {
            settype($old_method, 'string');
            throw new InvalidArgumentException(
                sprintf(
                    'Method %s is not Allowed!',
                    $old_method
                ),
                E_USER_ERROR
            );
        }

        return $object->withRequest(
            $object->request->withMethod($method)
        );
    }
public function withMethod($method)
    {
        $object = clone $this;
        /**
         *  Check available Method
         */
        $old_method  = $method;
        if (($method = $object->allowedMethod($method)) === false || !is_string($method)) {
            settype($old_method, 'string');
            throw new InvalidArgumentException(
                sprintf(
                    'Method %s is not Allowed!',
                    $old_method
                ),
                E_USER_ERROR
            );
        }

        return $object->withRequest(
            $object->request->withMethod($method)
        );
    }
public function withMethod ( $ method ) { $ object = clone $ this ; /**
         *  Check available Method
         */ $ old_method = $ method ; if ( ( $ method = $ object -> allowedMethod ( $ method ) ) === false || ! is_string ( $ method ) ) { settype ( $ old_method , 'string' ) ; throw new InvalidArgumentException ( sprintf ( 'Method %s is not Allowed!' , $ old_method ) , E_USER_ERROR ) ; } return $ object -> withRequest ( $ object -> request -> withMethod ( $ method ) ) ; }
With Method

@param string $method GET|PUT|HEAD|POST ... etc
fallback to default

@return static
@throws InvalidArgumentException
With Method