 https://bigfont.ca/taghelper-structure/
https://www.yogihosting.com/aspnet-core-custom-tag-helpers/
https://wesleycabus.be/writing-a-custom-taghelper-in-aspnet-5
https://riptutorial.com/asp-net-core/example/11152/custom-tag-helper
https://stackoverflow.com/questions/51904629/how-to-create-custom-tag-helper-containing-other-tag-helpers
