Add multiple Parent fileClass to a tag

[vkbytes]

In the Fileclass settings we can add a Parent fileclass as a extended keys. But this allows only one file to be added, can we have a array of Parent fileclass that a tag can extend its keys from ?

[lucas-wu-wakakak]

besides, parrent fileclass table view cannot list children fileclass caller's same properties data. It would be great if both problems are solved.