public function unschedule_specific_event( $timestamp = '' ) {
		if ( empty( $timestamp ) ) {
			$timestamp = wp_next_scheduled( $this->args[ 'name' ], $this->args[ 'args' ] );
		}
		wp_unschedule_event( $timestamp, $this->args[ 'name' ], $this->args[ 'args' ] );
	}