in log4j-api-to-jul/src/main/java/org/apache/logging/log4j/tojul/LazyLog4jLogRecord.java [56:69]
private void inferCaller() {
StackTraceElement location = null;
if (fqcn != null) {
location = StackLocatorUtil.calcLocation(fqcn);
}
if (location != null) {
setSourceClassName(location.getClassName());
setSourceMethodName(location.getMethodName());
} else {
setSourceClassName(null);
setSourceMethodName(null);
}
inferCaller = false;
}