Add Composer autoloading functions and PHPStan for testing

vendor/nikic/php-parser/lib/PhpParser/Node/Stmt/ClassLike.php

@@ -0,0 +1,48 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node\Stmt;
+
+use PhpParser\Node;
+
+/**
+ * @property Node\Name $namespacedName Namespaced name (if using NameResolver)
+ */
+abstract class ClassLike extends Node\Stmt
+{
+    /** @var Node\Identifier|null Name */
+    public $name;
+    /** @var Node\Stmt[] Statements */
+    public $stmts;
+
+    /**
+     * Gets all methods defined directly in this class/interface/trait
+     *
+     * @return ClassMethod[]
+     */
+    public function getMethods() : array {
+        $methods = [];
+        foreach ($this->stmts as $stmt) {
+            if ($stmt instanceof ClassMethod) {
+                $methods[] = $stmt;
+            }
+        }
+        return $methods;
+    }
+
+    /**
+     * Gets method with the given name defined directly in this class/interface/trait.
+     *
+     * @param string $name Name of the method (compared case-insensitively)
+     *
+     * @return ClassMethod|null Method node or null if the method does not exist
+     */
+    public function getMethod(string $name) {
+        $lowerName = strtolower($name);
+        foreach ($this->stmts as $stmt) {
+            if ($stmt instanceof ClassMethod && $lowerName === $stmt->name->toLowerString()) {
+                return $stmt;
+            }
+        }
+        return null;
+    }
+}