===description===
classMethodParameterViolation
===file===
<?php
                    class A {
                      /** @var int */
                      private $foo;

                        public function __construct(int &$foo) {
                            $this->foo = &$foo;
                            $foo = "hello";
                        }
                    }

                    $bar = 5;
                    $a = new A($bar); // $bar is constrained to an int
                    $bar = null; // ReferenceConstraintViolation issue emitted
===expect===
ReferenceConstraintViolation
===ignore===
TODO
