How to use the node-opcua-transport.is_valid_endpointUrl function in node-opcua-transport

module.exports.basic_types = require("node-opcua-basic-types");

// version
module.exports.version = require("./package.json").version;

module.exports.nodesets = require("node-opcua-nodesets");
module.exports.constructNodesetFilename = module.exports.nodesets.constructNodesetFilename;
module.exports.standard_nodeset_file = module.exports.nodesets.standard_nodeset_file;
module.exports.di_nodeset_filename = module.exports.nodesets.di_nodeset_filename;
module.exports.adi_nodeset_filename = module.exports.nodesets.adi_nodeset_filename;

// an incomplete but sufficient nodeset file used during testing
module.exports.mini_nodeset_filename = require("node-opcua-address-space/test_helpers/get_mini_address_space").mini_nodeset_filename;
module.exports.empty_nodeset_filename = require("node-opcua-address-space/test_helpers/get_mini_address_space").empty_nodeset_filename;

module.exports.is_valid_endpointUrl = require("node-opcua-transport").is_valid_endpointUrl;

// filtering tools
module.exports.checkSelectClause = require("node-opcua-address-space").checkSelectClause;
module.exports.constructEventFilter = require("node-opcua-service-filter").constructEventFilter;

const address_space_for_conformance_testing = require("node-opcua-address-space-for-conformance-testing");
module.exports.build_address_space_for_conformance_testing =
    address_space_for_conformance_testing.build_address_space_for_conformance_testing;

module.exports.install_optional_cpu_and_memory_usage_node = require("node-opcua-vendor-diagnostic").install_optional_cpu_and_memory_usage_node;
module.exports.construct_demo_alarm_in_address_space = require("node-opcua-address-space/test_helpers/alarms_and_conditions_demo").construct_demo_alarm_in_address_space;

module.exports.createBoilerType = require("node-opcua-address-space/test_helpers/boiler_system").createBoilerType;
module.exports.makeBoiler = require("node-opcua-address-space/test_helpers/boiler_system").makeBoiler;

module.exports.UAProxyManager = require("node-opcua-client-proxy").UAProxyManager;