/**
  * Use the `ValueType::BINARY_AS_BOOLEAN` flag to allow binaries `0` and `1` as boolean values
  *
  * @param   bool $value
  * @param   int         $flag   A flag used by the `ValueType::getType()` method
  * @throws  \ReflectionException if the parameter is not a boolean
  */
 public function __construct($value, $flag = ValueType::MODE_STRICT)
 {
     if (!ValueType::isBoolean($value, $flag)) {
         throw new \ReflectionException(sprintf(__METHOD__ . ' expects parameter one to be boolean, %s given', gettype($value)));
     }
     $this->setReadOnlyProperties($this::$_read_only);
     $this->type = ValueType::TYPE_BOOLEAN;
     $this->value = (bool) $value;
 }