WP_Taxonomy::get_rest_controller(): WP_REST_Controller|null

569	public function get_rest_controller() {570		if ( ! $this->show_in_rest ) {571			return null;572		}573 574		$class = $this->rest_controller_class ? $this->rest_controller_class : WP_REST_Terms_Controller::class;575 576		if ( ! class_exists( $class ) ) {577			return null;578		}579 580		if ( ! is_subclass_of( $class, WP_REST_Controller::class ) ) {581			return null;582		}583 584		if ( ! $this->rest_controller ) {585			$this->rest_controller = new $class( $this->name );586		}587 588		if ( ! ( $this->rest_controller instanceof $class ) ) {589			return null;590		}591 592		return $this->rest_controller;593	}