hasArity example

  /** * Gets the ResourceIdentifier's arity. * * One must check self::hasArity() before calling this method. * * @return int * The arity. */
  public function getArity() {
    assert($this->hasArity());
    return $this->meta[static::ARITY_KEY];
  }

  /** * Returns a copy of the given ResourceIdentifier with the given arity. * * @param int $arity * The new arity; must be a non-negative integer. * * @return static * A newly created ResourceIdentifier with the given arity, otherwise * the same. */