async def get(self,request_configuration: Optional[RequestConfiguration[CombinationConfigurationsRequestBuilderGetQueryParameters]] = None) -> Optional[AuthenticationCombinationConfigurationCollectionResponse]:
        """
        Get the authenticationCombinationConfiguration objects for an authentication strength policy. The objects can be of one or more of the following derived types:* fido2combinationConfigurations* x509certificatecombinationconfiguration authenticationCombinationConfiguration objects are supported only for custom authentication strengths.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[AuthenticationCombinationConfigurationCollectionResponse]
        Find more info here: https://learn.microsoft.com/graph/api/authenticationstrengthpolicy-list-combinationconfigurations?view=graph-rest-1.0
        """
        request_info = self.to_get_request_information(
            request_configuration
        )
        from .......models.o_data_errors.o_data_error import ODataError

        error_mapping: dict[str, type[ParsableFactory]] = {
            "XXX": ODataError,
        }
        if not self.request_adapter:
            raise Exception("Http core is null") 
        from .......models.authentication_combination_configuration_collection_response import AuthenticationCombinationConfigurationCollectionResponse

        return await self.request_adapter.send_async(request_info, AuthenticationCombinationConfigurationCollectionResponse, error_mapping)

        Get the authenticationCombinationConfiguration objects for an authentication strength policy. The objects can be of one or more of the following derived types:* fido2combinationConfigurations* x509certificatecombinationconfiguration authenticationCombinationConfiguration objects are supported only for custom authentication strengths.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[AuthenticationCombinationConfigurationCollectionResponse]
        Find more info here: https://learn.microsoft.com/graph/api/authenticationstrengthpolicy-list-combinationconfigurations?view=graph-rest-1.0
        
msgraph/generated/identity/conditional_access/authentication_strength/policies/item/combination_configurations/combination_configurations_request_builder.py