logback-android/src/main/java/ch/qos/logback/classic/spi/CallerData.java
private static boolean isInFrameworkSpaceList(String currentClass, List<String> frameworkPackageList) {
    if (frameworkPackageList == null)
      return false;

    for (String s : frameworkPackageList) {
      if (currentClass.startsWith(s))
        return true;
    }
    return false;
  }
private static boolean isInFrameworkSpaceList(String currentClass, List<String> frameworkPackageList) {
    if (frameworkPackageList == null)
      return false;

    for (String s : frameworkPackageList) {
      if (currentClass.startsWith(s))
        return true;
    }
    return false;
  }
Is currentClass present in the list of packages considered part of the logging framework?