def METHOD_NAME(self, service):
    """Test deserializing backend configuration."""
    instance = self.dependencies.instance if service.channel == "ibm_quantum" else None
    backends = service.backends(operational=True, simulator=False, instance=instance)
    # Known keys that look like a serialized complex number.
    good_keys = (
        "coupling_map",
        "qubit_lo_range",
        "meas_lo_range",
        "gates.coupling_map",
        "meas_levels",
        "qubit_channel_mapping",
        "backend_version",
        "rep_delay_range",
        "processor_type.revision",
    )
    good_keys_prefixes = ("channels",)
    for backend in backends:
        with self.subTest(backend=backend):
            self._verify_data(backend.configuration().to_dict(), good_keys, good_keys_prefixes)