private function sanitize_slug( &$slug ) {
		$slug = sanitize_key( $slug );
		if ( '' === $slug ) {
			$slug = count( $this->child );
		}
	}
private function sanitize_slug( &$slug ) {
		$slug = sanitize_key( $slug );
		if ( '' === $slug ) {
			$slug = count( $this->child );
		}
	}
private function sanitize_slug ( & $ slug ) { $ slug = sanitize_key ( $ slug ) ; if ( '' === $ slug ) { $ slug = count ( $ this -> child ) ; } }
Create a slug for the object

@since  1.0.0

@param string $slug The slug to be checked and created

@access private
Create a slug for the object