private function formatBacktrace() {

		$backtrace = $this -> error -> getBacktrace();
		
		if(null !== $backtrace) {

			array_shift($backtrace);
			array_shift($backtrace);

			foreach($backtrace as $index => $stack) {

				foreach(['type', 'args'] as $type) {

					if(true === isset($backtrace[$index][$type])) {
						unset($backtrace[$index][$type]);
					}
				}
			}
		}

		return $backtrace;
	}