Ash.Resource.Change.Builtins.manage_relationship
You're seeing just the function
manage_relationship
, go back to Ash.Resource.Change.Builtins module for more information.
Calls Ash.Changeset.manage_relationship/4
with the changeset and relationship provided, using the value provided for the named argument
For example
change manage_relationship(:add_comments, :comments, on_missing: :ignore, on_match: :no_match, on_no_match: {:create, :add_comment_to_post}