DatoCMS.GraphQLClient.Backends.MemoizingClient.fetch_localized

You're seeing just the function fetch_localized, go back to DatoCMS.GraphQLClient.Backends.MemoizingClient module for more information.
Link to this function

fetch_localized(t1, t2, t3)

Link to this function

fetch_localized(t1, t2, t3, t4)