Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wp-mail-smtp/src/Providers/SMTP/Mailer.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace WPMailSMTP\Providers\SMTP;
+
+use WPMailSMTP\Providers\MailerAbstract;
+
+/**
+ * Class Mailer inherits everything from parent abstract class.
+ * This file is required for a proper work of Loader and \ReflectionClass.
+ *
+ * @package WPMailSMTP\Providers\SMTP
+ */
+class Mailer extends MailerAbstract {
+
+	/**
+	 * @inheritdoc
+	 */
+	public function is_mailer_complete() {
+
+		$options = $this->connection_options->get_group( $this->mailer );
+
+		// Host and Port are the only really required options.
+		if (
+			! empty( $options['host'] ) &&
+			! empty( $options['port'] )
+		) {
+			return true;
+		}
+
+		return false;
+	}
+}