code: public final void warning(Class sourceClass,
                                String methodName,
                                String messageIdentifier,
                                Object object) {
          internalWarning(null,
                          sourceClass,
                          methodName,
                          messageIdentifier,
                          object);
      }
docs: Method warning tracing for static objects.
  
  @param Class of the static object making the trace call.
  @param String name of the method being entered.
  @param String identifying the message.
  @param Object to be inserted into the message.