Webmozart\Assert\Assert::isArray PHP Method

    public static function isArray($value, $message = '')
    {
        if (!is_array($value)) {
            static::reportInvalidArgument(sprintf($message ?: 'Expected an array. Got: %s', static::typeToString($value)));
        }
    }

 /**
  * @param array $setTuples
  * @param int $countTuples
  *
  * @return array
  *
  * @throws \InvalidArgumentException
  */
 private function validateTuples(array $setTuples, $countTuples)
 {
     Assert::notEq(0, $countTuples, 'The set builder requires a single array of one or more array sets.1');
     foreach ($setTuples as $tuple) {
         Assert::isArray($tuple, 'The set builder requires a single array of one or more array sets.');
     }
     return $setTuples;
 }