def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        from ....models.custom_extension_authentication_configuration import CustomExtensionAuthenticationConfiguration
        from ....models.custom_extension_endpoint_configuration import CustomExtensionEndpointConfiguration

        from ....models.custom_extension_authentication_configuration import CustomExtensionAuthenticationConfiguration
        from ....models.custom_extension_endpoint_configuration import CustomExtensionEndpointConfiguration

        fields: dict[str, Callable[[Any], None]] = {
            "authenticationConfiguration": lambda n : setattr(self, 'authentication_configuration', n.get_object_value(CustomExtensionAuthenticationConfiguration)),
            "endpointConfiguration": lambda n : setattr(self, 'endpoint_configuration', n.get_object_value(CustomExtensionEndpointConfiguration)),
        }
        return fields

        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        
msgraph/generated/identity/custom_authentication_extensions/validate_authentication_configuration/validate_authentication_configuration_post_request_body.py