code: public boolean hasLogger(final String name, final Class<? extends MessageFactory> messageFactoryClass) {
          return getOrCreateInnerMap(factoryClassKey(messageFactoryClass)).containsKey(name);
      }
docs: Detects if a Logger with the specified name and MessageFactory type exists.
  @param name The Logger name to search for.
  @param messageFactoryClass The message factory class to search for.
  @return true if the Logger exists, false otherwise.
  @since 2.5