install
Makes SLF4J the sink for log4k logging: registers a Slf4jLoggingAppender and — by default — unregisters every other logging appender (the default SimpleConsoleLoggingAppender included), so nothing is logged twice. Pass unregisterOthers= false to keep the appenders already registered and add the SLF4J one alongside them.
Return
The registered appender, e.g., for later unregistration.
Parameters
unregisterOthers
Whether to unregister every other logging appender (default true).