How to use the sbol3.config.Config function in sbol3

def find_resource(self, uri, resource_namespaces, object_store, parent_obj, typedURI=False):
        persistentIdentity = ''
        for ns in resource_namespaces:
            # Assume the parent object is TopLevel and form the compliant URI
            if typedURI is True:
                compliant_uri = os.path.join(ns, parseClassName(self._rdf_type), uri)
            else:
                compliant_uri = os.path.join(ns, uri)
            compliant_uri += os.sep
            compliant_uri = URIRef(compliant_uri)
            persistent_id_matches = []
            if Config.getOption('verbose') is True:
                print('Searching for TopLevel: ' + compliant_uri)
            for obj in object_store:
                if compliant_uri in obj.identity:
                    persistent_id_matches.append(obj)
                # Sort objects with same persistentIdentity by version
                # TODO is this right?
                persistent_id_matches.sort(key=sort_version)
            # If objects matching the persistentIdentity were found, return the most recent version
            if len(persistent_id_matches) > 0:
                return persistent_id_matches[-1]
            # Assume the object is not TopLevel # TODO Not sure what this is for
            if SBOL_PERSISTENT_IDENTITY in parent_obj.properties:
                persistentIdentity = parent_obj.properties[SBOL_PERSISTENT_IDENTITY][0]
            if SBOL_VERSION in parent_obj.properties:
                version = parent_obj.properties[SBOL_VERSION][0]
                compliant_uri = URIRef(os.path.join(persistentIdentity, uri, version))

def setHomespace(ns):
    Config.setHomespace(ns)

def setFileFormat(file_format):
    Config.setFileFormat(file_format)

def getFileFormat():
    return Config.getFileFormat()