When using z_notifier:observe/3 with {Module, Fun} syntax, take into account the module priority.
When using z_notifier:observe/3 with {Module, Fun} syntax, take into
account the module priority.

erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta