WP_Block_Pattern_Categories_Registry::register( string $category_name, array $category_properties ): bool

52	public function register( $category_name, $category_properties ) {53		if ( ! isset( $category_name ) || ! is_string( $category_name ) ) {54			_doing_it_wrong(55				__METHOD__,56				__( 'Block pattern category name must be a string.' ),57				'5.5.0'58			);59			return false;60		}61 62		$category = array_merge(63			array( 'name' => $category_name ),64			$category_properties65		);66 67		$this->registered_categories[ $category_name ] = $category;68 69		// If the category is registered inside an action other than `init`, store it70		// also to a dedicated array. Used to detect deprecated registrations inside71		// `admin_init` or `current_screen`.72		if ( current_action() && 'init' !== current_action() ) {73			$this->registered_categories_outside_init[ $category_name ] = $category;74		}75 76		return true;77	}