slf4j-timber/src/main/java/org/slf4j/impl/TimberAndroidLoggerAdapter.java
public void warn(String msg, Throwable t) {
        log(Log.WARN, msg, t);
    }
public void warn(String msg, Throwable t) {
        log(Log.WARN, msg, t);
    }
public void warn ( String msg , Throwable t ) { log ( Log . WARN , msg , t ) ; }
Log an exception (throwable) at the WARN level with an accompanying
message.

@param msg the message accompanying the exception
@param t   the exception (throwable) to log
Log an exception ( throwable ) at the WARN level with an accompanying message .