Provide a possibility to override or hook into the hreflang generator
Currently there is no real possibility to override the hrelang tags that are generated by the core. Please provide a hook.
#11 Updated by Marc Hirdes about 13 hours ago
I have a use case. A customer has a multidomain setup with different page trees and language domains. Some of the pages in different trees should be connected via hreflang. This is a case where the connections only can be set manually. Therefore we need a way to modify or prevent the current hreflang generation. "additionalHeaderData" is a place were we can't modify the data.