docs: private Method findAddRemoveListenerMethod(Class<?> sourceClass, String methodName) throws IntrospectionException
  	{
  		try
  		{
  			return sourceClass.getMethod(methodName, listenerType);
  		}
  		catch (NoSuchMethodException e)
  		{
  			return findAddRemoveListnerMethodWithLessCheck(sourceClass, methodName);
  		}
  		catch (Exception e)
  		{
  			throw new IntrospectionException(Messages.getString("beans.31", //$NON-NLS-1$
  					methodName, listenerType.getName()));
  		}
  	}