is it possible to customize a content fragment template so it has advanced options, like datepicker and checkbox fields on it's creation? It is for it that the option WeakReference exists? I cannot found this option on the documentation. If it is not possible with content fragment, there is another way that I can create a complete asset type, with url, checkbox and date fields?
I am seeing only these few options to use in the content fragment template:
Remove the libs folder from your path and that should fix the issue. It should be under /apps/dam/cfm/admin/content. The documentation for creating Content Fragment Templates may also be helpful in understanding how the overlay works. It's the same concept only for templates. Content fragment templates may also be a solution to the problem you are trying to solve.