View file File name : BodySummarizerInterface.php Content :<?php namespace WPMailSMTP\Vendor\GuzzleHttp; use WPMailSMTP\Vendor\Psr\Http\Message\MessageInterface; interface BodySummarizerInterface { /** * Returns a summarized message body. */ public function summarize(\WPMailSMTP\Vendor\Psr\Http\Message\MessageInterface $message) : ?string; }