def METHOD_NAME(self, cfn):
    """Initialize the rule"""
    for resource_type_spec in RESOURCE_SPECS.get(cfn.regions[0]).get(
        "ResourceTypes"
    ):
        self.resource_property_types.append(resource_type_spec)
    for property_type_spec in RESOURCE_SPECS.get(cfn.regions[0]).get(
        "PropertyTypes"
    ):
        self.resource_sub_property_types.append(property_type_spec)