async def get(self,request_configuration: Optional[RequestConfiguration[DefaultRequestBuilderGetQueryParameters]] = None) -> Optional[CrossTenantAccessPolicyConfigurationDefault]:
        """
        Read the default configuration of a cross-tenant access policy. This default configuration may be the service default assigned by Microsoft Entra ID (isServiceDefault is true) or may be customized in your tenant (isServiceDefault is false).
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[CrossTenantAccessPolicyConfigurationDefault]
        Find more info here: https://learn.microsoft.com/graph/api/crosstenantaccesspolicyconfigurationdefault-get?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.cross_tenant_access_policy_configuration_default import CrossTenantAccessPolicyConfigurationDefault

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

        Read the default configuration of a cross-tenant access policy. This default configuration may be the service default assigned by Microsoft Entra ID (isServiceDefault is true) or may be customized in your tenant (isServiceDefault is false).
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[CrossTenantAccessPolicyConfigurationDefault]
        Find more info here: https://learn.microsoft.com/graph/api/crosstenantaccesspolicyconfigurationdefault-get?view=graph-rest-1.0
        
msgraph/generated/policies/cross_tenant_access_policy/default/default_request_builder.py