slf4j-timber/src/main/java/org/slf4j/impl/TimberAndroidLoggerAdapter.java
public void debug(String format, Object arg) {
        formatAndLog(Log.DEBUG, format, arg);
    }
public void debug(String format, Object arg) {
        formatAndLog(Log.DEBUG, format, arg);
    }
public void debug ( String format , Object arg ) { formatAndLog ( Log . DEBUG , format , arg ) ; }
Log a message at level DEBUG according to the specified format and argument.
<p>
<p>
This form avoids superfluous object creation when the logger is disabled
for level DEBUG.
</p>

@param format the format string
@param arg    the argument
Log a message at level DEBUG according to the specified format and argument . <p > <p > This form avoids superfluous object creation when the logger is disabled for level DEBUG . < / p >