logback-android/src/main/java/ch/qos/logback/classic/pattern/EnsureExceptionHandling.java
public boolean chainHandlesThrowable(Converter<ILoggingEvent> head) {
    Converter<ILoggingEvent> c = head;
    while (c != null) {
      if (c instanceof ThrowableHandlingConverter) {
        return true;
      }
      c = c.getNext();
    }
    return false;
  }
public boolean chainHandlesThrowable(Converter<ILoggingEvent> head) {
    Converter<ILoggingEvent> c = head;
    while (c != null) {
      if (c instanceof ThrowableHandlingConverter) {
        return true;
      }
      c = c.getNext();
    }
    return false;
  }
This method computes whether a chain of converters handles exceptions or
not.

@param head
The first element of the chain
@return true if can handle throwables contained in logging events