async def get(self,request_configuration: Optional[RequestConfiguration[PoliciesRequestBuilderGetQueryParameters]] = None) -> Optional[AuthenticationStrengthPolicyCollectionResponse]:
        """
        A collection of authentication strength policies that exist for this tenant, including both built-in and custom policies.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[AuthenticationStrengthPolicyCollectionResponse]
        """
        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_strength_policy_collection_response import AuthenticationStrengthPolicyCollectionResponse

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

        A collection of authentication strength policies that exist for this tenant, including both built-in and custom policies.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[AuthenticationStrengthPolicyCollectionResponse]
        
msgraph/generated/identity/conditional_access/authentication_strength/policies/policies_request_builder.py