[static-analysis] Fixes PHPStan errors minus - access to an undefined…

… property object.

.phpstan/stubs/includes/entities/class-fs-entity.php

@@ -0,0 +1,93 @@
+<?php
+
+    /**
+     * @param mixed $object
+     *
+     * @return array<string, mixed>
+     */
+    function fs_get_object_public_vars($object) {
+        return [];
+    }
+
+    class FS_Entity {
+
+        /**
+         * @var int
+         */
+        public $id;
+
+        /**
+         * @var string
+         */
+        public $updated;
+
+        /**
+         * @var string
+         */
+        public $created;
+
+        /**
+         * FS_Entity constructor.
+         * @param mixed $entity
+         */
+        function __construct($entity = false) {
+            // Implementation here
+        }
+
+        /**
+         * @return string
+         */
+        static function get_type() {
+            // Implementation here
+            return '';
+        }
+
+        /**
+         * @param mixed $entity1
+         * @param mixed $entity2
+         * @return bool
+         */
+        static function equals($entity1, $entity2) {
+            // Implementation here
+            return false;
+        }
+
+        /**
+         * @var bool
+         */
+        private $_is_updated = false;
+
+        /**
+         * @param string $key
+         * @param bool $val
+         * @return bool
+         */
+        function update($key, $val = false) {
+            return false;
+        }
+
+        /**
+         * @return bool
+         */
+        function is_updated() {
+            // Implementation here
+            return $this->_is_updated;
+        }
+
+        /**
+         * @param int $id
+         * @return bool
+         */
+        static function is_valid_id($id) {
+            // Implementation here
+            return false;
+        }
+
+        /**
+         * @return string
+         */
+        public static function get_class_name() {
+            // Implementation here
+            return '';
+        }
+    }

.phpstan/stubs/includes/fs-plugin-info-dialog.php

@@ -0,0 +1,129 @@
+<?php
+    class FS_Plugin_Plan extends FS_Entity {
+
+        /**
+         * @var int
+         */
+        public $plugin_id;
+
+        /**
+         * @var string
+         */
+        public $name;
+
+        /**
+         * @var string
+         */
+        public $title;
+
+        /**
+         * @var string
+         */
+        public $description;
+
+        /**
+         * @var bool
+         */
+        public $is_free_localhost;
+
+        /**
+         * @var bool
+         */
+        public $is_block_features;
+
+        /**
+         * @var string
+         */
+        public $license_type;
+
+        /**
+         * @var bool
+         */
+        public $is_https_support;
+
+        /**
+         * @var int
+         */
+        public $trial_period;
+
+        /**
+         * @var bool
+         */
+        public $is_require_subscription;
+
+        /**
+         * @var string
+         */
+        public $support_kb;
+
+        /**
+         * @var string
+         */
+        public $support_forum;
+
+        /**
+         * @var string
+         */
+        public $support_email;
+
+        /**
+         * @var string
+         */
+        public $support_phone;
+
+        /**
+         * @var string
+         */
+        public $support_skype;
+
+        /**
+         * @var bool
+         */
+        public $is_success_manager;
+
+        /**
+         * @var bool
+         */
+        public $is_featured;
+
+        /**
+         * @var bool
+         */
+        public $is_hidden;
+
+        /**
+         * @var array<string, mixed>
+         */
+        public $pricing;
+
+        /**
+         * @var array<string, mixed>
+         */
+        public $features;
+
+        /**
+         * FS_Plugin_Plan constructor.
+         * @param object|bool $plan
+         */
+        public function __construct($plan = false) {}
+
+        /**
+         * @return string
+         */
+        public static function get_type() {}
+
+        /**
+         * @return bool
+         */
+        public function is_free() {}
+
+        /**
+         * @return bool
+         */
+        public function has_technical_support() {}
+
+        /**
+         * @return bool
+         */
+        public function has_trial() {}
+    }