How to use the obspy.core.event.ResourceIdentifier function in obspy

def sm_generator(scnls=None, amplitudes=None):
    """ Function to create station magntiudes for testing."""
    counter = 1
    sms = []
    scnls = scnls or []
    params = {
        "origin_id": ev.ResourceIdentifier(),
        "station_magnitude_type": "M",
        "method_id": "mag_calculator",
    }

    for scnl in scnls:
        sm = ev.StationMagnitude(
            mag=counter,
            mag_errors=ev.QuantityError(uncertainty=counter * 0.1, confidence_level=95),
            waveform_id=ev.WaveformStreamID(seed_string=scnl),
            creation_info=ev.CreationInfo(
                agency_id="dummy_agency", author="dummy", creation_time=UTCDateTime()
            ),
            **params,
        )
        sms.append(sm)
        counter += 1

origin = event.origins[0]
        evid = event.resource_id.id.split('/')[-1]
        waveform_id = WaveformStreamID()
        waveform_id.station_code = station
        # network_code is required for QuakeML validation
        waveform_id.network_code = '  '
        station_string = \
            waveform_id.get_seed_string()\
            .replace(' ', '-').replace('.', '_').lower()
        prefix = '/'.join((res_id_prefix, 'waveformstream',
                           evid, station_string))
        waveform_id.resource_uri = ResourceIdentifier(prefix=prefix)
        pick = Pick()
        prefix = '/'.join((res_id_prefix, 'pick', evid, station_string))
        pick.resource_id = ResourceIdentifier(prefix=prefix)
        date = origin.time.strftime('%Y%m%d')
        pick.time = UTCDateTime(date + arrival_time)
        # Check if pick is on the next day:
        if pick.time < origin.time:
            pick.time += timedelta(days=1)
        pick.waveform_id = waveform_id
        pick.backazimuth = backazimuth
        onset = phase[0]
        if onset == 'e':
            pick.onset = 'emergent'
            phase = phase[1:]
        elif onset == 'i':
            pick.onset = 'impulsive'
            phase = phase[1:]
        elif onset == 'q':
            pick.onset = 'questionable'

:param parent_res_id:
            :class:`~obspy.core.event.resourceid.ResourceIdentifier`
        :rtype: :class:`~obspy.core.event.resourceid.ResourceIdentifier`
        :return: ResourceIdentifier object.
        """
        prefix = self.res_id_prefix
        # Put the parent id as prefix
        # Example: smi:local/origin/351412/arrival/6389611
        #          |        prefix        |     ident    |
        if parent:
            prefix = parent.resource_id.id
        elif parent_res_id:
            prefix = parent_res_id.id

        public_id = "%s/%s" % (prefix, ident)
        return ResourceIdentifier(public_id)

def plot_data(event, station, show=True, legend=False):
    val = data[obspy.core.event.ResourceIdentifier(event)]
    obs = val["processed_observed_stream"].select(station=station)[0]
    syn = val["processed_synthetic_stream"].select(station=station)[0]

    plt.plot(obs.times(), obs.data * 1E6, color="0.3", linestyle="--", linewidth=5,
             label="Observed Data")
    plt.plot(syn.times(), syn.data * 1E6, color="0.1", linestyle=":", label="Synthetic Data")

    ts= original_cs[(original_cs.event == validate) &
                    (original_cs.station == "TIN")].time_shift

    plt.plot(syn.times() - float(ts), syn.data * 1E6, color="k", label="Shifted Synthetic Data")
    plt.ylabel("Velocity [$\mu$m/s]")
    plt.xlabel("Relative Time [s]")
    plt.xlim(20, 65)

    plt.xticks([30, 40, 50, 60], ["30", "40", "50", "60"])

def _set_resource_id(self, value):
        if type(value) == dict:
            value = ResourceIdentifier(**value)
        elif type(value) != ResourceIdentifier:
            value = ResourceIdentifier(value)
        self.__dict__['resource_id'] = value

if z_amplitude is not None:
            amplitude = Amplitude()
            prefix = '/'.join((res_id_prefix, 'amp', evid, station_string))
            amplitude.resource_id = ResourceIdentifier(prefix=prefix)
            amplitude.generic_amplitude = z_amplitude * 1E-6
            amplitude.unit = 'm'
            amplitude.period = z_period
            amplitude.type = 'AS'
            amplitude.magnitude_hint = 'Ms'
            amplitude.pick_id = pick.resource_id
            event.amplitudes.append(amplitude)
        if msz_mag is not None:
            station_magnitude = StationMagnitude()
            prefix = '/'.join((res_id_prefix, 'stationmagntiude',
                               evid, station_string))
            station_magnitude.resource_id = ResourceIdentifier(prefix=prefix)
            station_magnitude.origin_id = event.origins[0].resource_id
            station_magnitude.mag = ms_mag
            station_magnitude.station_magnitude_type = 'Ms'
            if amplitude is not None:
                station_magnitude.amplitude_id = amplitude.resource_id
            event.station_magnitudes.append(station_magnitude)

UserWarning("Found focal-mechanism info: reading amplitude-ratio fit,"
                "number of bad polarities and number of bad amplitude ratios"
                "is not implemented.")
    for line, line_num in tagged_lines['F']:
        nodal_p = NodalPlane(strike=float(line[0:10]), dip=float(line[10:20]),
                             rake=float(line[20:30]))
        try:
            # Apparently these don't have to be filled.
            nodal_p.strike_errors = QuantityError(float(line[30:35]))
            nodal_p.dip_errors = QuantityError(float(line[35:40]))
            nodal_p.rake_errors = QuantityError(float(line[40:45]))
        except ValueError:
            pass
        fm = FocalMechanism(nodal_planes=NodalPlanes(nodal_plane_1=nodal_p))
        try:
            fm.method_id = ResourceIdentifier(
                "smi:nc.anss.org/focalMehcanism/" + line[70:77].strip())
            fm.creation_info = CreationInfo(agency_id=line[66:69].strip)
            fm.misfit = float(line[45:50])
            fm.station_distribution_ratio = float(line[50:55])
        except ValueError:
            pass
        event.focal_mechanisms.append(fm)
    return event

creation_info=CreationInfo(agency_id=mt_line_1[45:48].strip())))
        event.magnitudes.append(Magnitude(
            mag=float(mt_line_1[55:59]),
            magnitude_type=_nortoevmag(mt_line_1[59]),
            creation_info=CreationInfo(agency_id=mt_line_1[60:63].strip()),
            origin_id=event.origins[-1].resource_id))
        event.focal_mechanisms.append(FocalMechanism(
            moment_tensor=MomentTensor(
                derived_origin_id=event.origins[-1].resource_id,
                moment_magnitude_id=event.magnitudes[-1].resource_id,
                scalar_moment=float(mt_line_2[52:62]), tensor=Tensor(
                    m_rr=float(mt_line_2[3:9]), m_tt=float(mt_line_2[10:16]),
                    m_pp=float(mt_line_2[17:23]), m_rt=float(mt_line_2[24:30]),
                    m_rp=float(mt_line_2[31:37]),
                    m_tp=float(mt_line_2[38:44])),
                method_id=ResourceIdentifier(
                    "smi:nc.anss.org/momentTensor/" + mt_line_1[70:77].strip()
                ))))
    return event

depth_usage_flag = phase[7]
                except IndexError:
                    # usage flag is not defined
                    depth_usage_flag = None
                # FIXME: I'm not sure that 'X' actually
                # means 'used'
                if depth_usage_flag == 'X':
                    # FIXME: is this enough to say that
                    # the event is constrained by depth phases?
                    origin.depth_type = 'constrained by depth phases'
                    origin.quality.depth_phase_count += 1
            else:
                pick = Pick()
                prefix = '/'.join((res_id_prefix, 'pick',
                                   evid, station_string))
                pick.resource_id = ResourceIdentifier(prefix=prefix)
                date = origin.time.strftime('%Y%m%d')
                pick.time = UTCDateTime(date + arrival_time)
                # Check if pick is on the next day:
                if pick.time < origin.time:
                    pick.time += timedelta(days=1)
                pick.waveform_id = p_pick.waveform_id
                pick.backazimuth = p_pick.backazimuth
                onset = phase[0]
                if onset == 'e':
                    pick.onset = 'emergent'
                    phase = phase[1:]
                elif onset == 'i':
                    pick.onset = 'impulsive'
                    phase = phase[1:]
                elif onset == 'q':
                    pick.onset = 'questionable'

station_magnitude.waveform_id = pick.waveform_id
            res_id = '/'.join(
                (res_id_prefix, 'magnitude/generic/body_wave_magnitude'))
            station_magnitude.method_id = \
                ResourceIdentifier(id=res_id)
            event.station_magnitudes.append(station_magnitude)
        arrival = Arrival()
        prefix = '/'.join((res_id_prefix, 'arrival', evid, station_string))
        arrival.resource_id = ResourceIdentifier(prefix=prefix)
        arrival.pick_id = pick.resource_id
        arrival.phase = pick.phase_hint
        arrival.azimuth = azimuth
        arrival.distance = distance
        arrival.time_residual = residual
        res_id = '/'.join((res_id_prefix, 'earthmodel/ak135'))
        arrival.earth_model_id = ResourceIdentifier(id=res_id)
        origin.arrivals.append(arrival)
        origin.quality.minimum_distance = min(
            d for d in (arrival.distance, origin.quality.minimum_distance)
            if d is not None)
        origin.quality.maximum_distance = \
            max(arrival.distance, origin.quality.minimum_distance)
        origin.quality.associated_phase_count += 1
        return pick, arrival