Add Composer autoloading functions and PHPStan for testing

vendor/nikic/php-parser/lib/PhpParser/Node/Param.php

@@ -0,0 +1,49 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node;
+
+use PhpParser\NodeAbstract;
+
+class Param extends NodeAbstract
+{
+    /** @var null|Identifier|Name|NullableType Type declaration */
+    public $type;
+    /** @var bool Whether parameter is passed by reference */
+    public $byRef;
+    /** @var bool Whether this is a variadic argument */
+    public $variadic;
+    /** @var Expr\Variable|Expr\Error Parameter variable */
+    public $var;
+    /** @var null|Expr Default value */
+    public $default;
+
+    /**
+     * Constructs a parameter node.
+     *
+     * @param Expr\Variable|Expr\Error                 $var        Parameter variable
+     * @param null|Expr                                $default    Default value
+     * @param null|string|Identifier|Name|NullableType $type       Type declaration
+     * @param bool                                     $byRef      Whether is passed by reference
+     * @param bool                                     $variadic   Whether this is a variadic argument
+     * @param array                                    $attributes Additional attributes
+     */
+    public function __construct(
+        $var, Expr $default = null, $type = null,
+        bool $byRef = false, bool $variadic = false, array $attributes = []
+    ) {
+        parent::__construct($attributes);
+        $this->type = \is_string($type) ? new Identifier($type) : $type;
+        $this->byRef = $byRef;
+        $this->variadic = $variadic;
+        $this->var = $var;
+        $this->default = $default;
+    }
+
+    public function getSubNodeNames() : array {
+        return ['type', 'byRef', 'variadic', 'var', 'default'];
+    }
+
+    public function getType() : string {
+        return 'Param';
+    }
+}