update

wp-content/plugins/fluent-smtp/includes/Support/Contracts/ArrayableInterface.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace FluentMail\Includes\Support\Contracts;
+
+interface ArrayableInterface {
+
+	/**
+	 * Get the instance as an array.
+	 *
+	 * @return array
+	 */
+	public function toArray();
+
+}

wp-content/plugins/fluent-smtp/includes/Support/Contracts/ContextualBindingBuilderContract.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace FluentMail\Includes\Support\Contracts;
+
+interface ContextualBindingBuilderContract
+{
+    /**
+     * Define the abstract target that depends on the context.
+     *
+     * @param  string  $abstract
+     * @return $this
+     */
+    public function needs($abstract);
+    
+    /**
+     * Define the implementation for the contextual binding.
+     *
+     * @param  Closure|string  $implementation
+     * @return void
+     */
+    public function give($implementation);
+}

wp-content/plugins/fluent-smtp/includes/Support/Contracts/FileInterface.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace FluentMail\Includes\Support\Contracts;
+
+interface FileInterface
+{
+    /**
+     * Returns whether the file was uploaded successfully.
+     *
+     * @return bool
+     */
+    public function isValid();
+
+    /**
+     * Gets the path without filename
+     *
+     * @return string
+     */
+    public function getPath();
+
+    /**
+     * Take an educated guess of the file's extension.
+     *
+     * @return mixed|null
+     */
+    public function guessExtension();
+
+    /**
+     * Returns the original file extension.
+     *
+     * @return string
+     */
+    public function getClientOriginalExtension();
+}

wp-content/plugins/fluent-smtp/includes/Support/Contracts/JsonableInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace FluentMail\Includes\Support\Contracts;
+
+interface JsonableInterface {
+
+	/**
+	 * Convert the object to its JSON representation.
+	 *
+	 * @param  int  $options
+	 * @return string
+	 */
+	public function toJson($options = 0);
+
+}