Methods whether classId is valid or not . Given class is case insensitive.

def FindClassIdInMethodMetaIgnoreCase(classId):
		""" Methods whether classId is valid or not . Given class is case insensitive. """
		if classId in _MethodFactoryMeta:
			return classId
		lClassId = classId.lower()
		for key in _MethodFactoryMeta.keys():
			if (key.lower() == classId.lower()):
				return key
		return None