public void addTag(Set<HandlerMethod> handlerMethods, io.swagger.v3.oas.models.tags.Tag tag) {
		handlerMethods.forEach(handlerMethod -> springdocTags.put(handlerMethod, tag));
	}
Add tag.

@param handlerMethods the handler methods
@param tag            the tag
springdoc-openapi-starter-common/src/main/java/org/springdoc/core/service/OpenAPIService.java