required dosen't work if json top level is an Array

[renner-elio]

If I create a Schema that requires a property and validate an JSON of an empty object {}, I get the expected ObjectException: "Required property missing ...", but if I do the same with an empty array [], the schema validates successfully despite the required property not being present.

minimal example (should throw error on last line but doesn't):

<?php
require_once __DIR__ . '/vendor/autoload.php';

use Swaggest\JsonSchema\Schema;
use Swaggest\JsonSchema\Structure\ClassStructure;

class MyClass extends ClassStructure
{
    public $name;
    public static function setUpProperties($properties, Schema $ownerSchema)
    {
        $properties->name = Schema::string();
        $ownerSchema->required = array(self::names()->name);
    }

}

$validInput = <<<JSON
{
    "name": "John"
}
JSON;

$imported = MyClass::import(json_decode($validInput));

$InvalidInput = <<<JSON
[
]
JSON;

$imported = MyClass::import(json_decode($InvalidInput));