WP_REST_Terms_Controller::__construct( string $taxonomy )

	public function __construct( $taxonomy ) {
		$this->taxonomy = $taxonomy;
		$this->namespace = 'wp/v2';
		$tax_obj = get_taxonomy( $taxonomy );
		$this->rest_base = ! empty( $tax_obj->rest_base ) ? $tax_obj->rest_base : $tax_obj->name;

		$this->meta = new WP_REST_Term_Meta_Fields( $taxonomy );
	}