How to use the xiblint.xibutils.get_object_id function in xiblint

def check_new_format(context, view, accessibility_format, accessibility_sources, used_identifiers):
    sources_by_id = get_accessibility_sources_by_id(accessibility_sources)
    source_identifiers = set(sources_by_id.keys())
    missing_identifiers = used_identifiers - source_identifiers
    extra_source_identifiers = source_identifiers - used_identifiers
    for identifier in missing_identifiers:
        context.error(view, "Missing accessibility source for identifier '{}' in accessibility format", identifier)
    for identifier in extra_source_identifiers:
        context.error(view, "Unused accessibility source with identifier '{}' in accessibility format", identifier)
    unidentified_sources = set(accessibility_sources) - set(sources_by_id.values())
    for source in unidentified_sources:
        context.error(view, "Accessibility source '{}' missing accessibility identifier", get_object_id(source))
    if '%@' in accessibility_format:
        context.error(view, "New-style accessibility format contains '%@'")

def error(self, element, message, *args):
        self.success = False
        object_id = get_object_id(element)
        moniker = self._get_moniker(element)

        new_error = "{}{}{}".format(
            "{}: ".format(object_id) if object_id else '',
            "'{}': ".format(moniker) if moniker else '',
            message.format(*args),
        )
        new_error_dict = {
            "file": self.path,
            "line": element.line,
            "error": new_error,
            "rule": self.rule_name,
        }

        self.errors.append(new_error_dict)