<?php
class Foo
{}

class Foo1
{
}

class Foo2
{
    public function foo()
    {
    }
}

interface Foo3
{
}

trait Foo4
{
}

class Foo5
{
    // Comment here
}

class Foo6
{
    public const X = 1;
}

$instance = new class extends \Foo implements \HandleableInterface {
    // Class content
};

$instance = new class extends \Foo implements \HandleableInterface {
    // Class content
};

enum Valid
{
}

enum Invalid
{
}