executes all registered mapper for given event
executes all registered mapper for given event
the event to map
mapped event as map
transform internal mutable map into a immutable map
registers a new mapper function for a special field, if there's already a mapper set for given field, it will be overridden.
registers a new mapper function for a special field, if there's already a mapper set for given field, it will be overridden.
the field the mapper function is related to
the mapper function for given field
this instance for chaining
registry for all event mapper functions
the logging event type