Neos\Eel\Tests\Unit\ArrayHelperTest::keysExamples PHP Method

    public function keysExamples()
    {
        return ['empty array' => [[], []], 'numeric indices' => [['a', 'b', 'c'], [0, 1, 2]], 'string keys' => [['foo' => 'bar', 'bar' => 'baz'], ['foo', 'bar']]];
    }