protected function _updateObject( $user_id, $fields ) {
		$fields['ID'] = $user_id;
		$updated = wp_update_user( $fields );
		if ( $updated && ! is_wp_error( $updated ) ) {
			$this->_debug( 'Updated user ' . $user_id );
		} elseif ( is_wp_error( $updated ) ) {
			$this->_debug(
				'Update failed for user %d with message [%s] %s',
				$user_id,
				$updated->get_error_code(),
				$updated->get_error_message()
			);
		} else {
			$this->_debug( 'Update failed for user ' . $user_id );
		}

		return $updated;
	}