How to use the @actions/core/lib/command.issueCommand function in @actions/core

async function run() {
    let kubeconfig = await getKubeconfig();
    const runnerTempDirectory = process.env['RUNNER_TEMP']; // Using process.env until the core libs are updated
    const kubeconfigPath = path.join(runnerTempDirectory, `kubeconfig_${Date.now()}`);
    core.debug(`Writing kubeconfig contents to ${kubeconfigPath}`);
    fs.writeFileSync(kubeconfigPath, kubeconfig);
    issueCommand('set-env', { name: 'KUBECONFIG' }, kubeconfigPath);
    console.log('KUBECONFIG environment variable is set');
}

async function run() {
    let kubeconfig = getKubeconfig();
    const runnerTempDirectory = process.env['RUNNER_TEMP']; // Using process.env until the core libs are updated
    const kubeconfigPath = path.join(runnerTempDirectory, `kubeconfig_${Date.now()}`);
    core.debug(`Writing kubeconfig contents to ${kubeconfigPath}`);
    fs.writeFileSync(kubeconfigPath, kubeconfig);
    issueCommand('set-env', { name: 'KUBECONFIG' }, kubeconfigPath);
    console.log('KUBECONFIG environment variable is set');
    await setContext();
}

let config = {
        "auths": {
            [loginServer]: {
                auth: authenticationToken
            }
        }
    }

    const runnerTempDirectory = process.env['RUNNER_TEMP']; // Using process.env until the core libs are updated
    const dirPath = path.join(runnerTempDirectory, `docker_login_${Date.now()}`);
    await io.mkdirP(dirPath);
    const dockerConfigPath = path.join(dirPath, `config.json`);
    core.debug(`Writing docker config contents to ${dockerConfigPath}`);
    fs.writeFileSync(dockerConfigPath, JSON.stringify(config));
    issueCommand('set-env', { name: 'DOCKER_CONFIG' }, dirPath);
    console.log('DOCKER_CONFIG environment variable is set');
}

function run() {
    core.warning('This action is moved to azure/containers-actions repository, update your workflows to use those actions instead.');
    let pathToDockerConfig = process.env['DOCKER_CONFIG'];
    if (pathToDockerConfig && ioUtil.exists(pathToDockerConfig)) {
        io.rmRF(pathToDockerConfig); // Deleting the docker config directory
        core.debug(`${pathToDockerConfig} has been successfully deleted`);
    }
    ;
    command_1.issueCommand('set-env', { name: 'DOCKER_CONFIG' }, '');
    console.log('DOCKER_CONFIG environment variable unset');
}
run();

return __awaiter(this, void 0, void 0, function* () {
        let kubeconfig = yield getKubeconfig();
        const runnerTempDirectory = process.env['RUNNER_TEMP']; // Using process.env until the core libs are updated
        const kubeconfigPath = path.join(runnerTempDirectory, `kubeconfig_${Date.now()}`);
        core.debug(`Writing kubeconfig contents to ${kubeconfigPath}`);
        fs.writeFileSync(kubeconfigPath, kubeconfig);
        command_1.issueCommand('set-env', { name: 'KUBECONFIG' }, kubeconfigPath);
        console.log('KUBECONFIG environment variable is set');
    });
}

function run() {
    core.warning('This action is moved to azure/containers-actions repository, update your workflows to use those actions instead.');
    let pathToDockerConfig = process.env['DOCKER_CONFIG'];
    if (pathToDockerConfig && ioUtil.exists(pathToDockerConfig)) {
        io.rmRF(pathToDockerConfig); // Deleting the docker config directory
        core.debug(`${pathToDockerConfig} has been successfully deleted`);
    };
    issueCommand('set-env', { name: 'DOCKER_CONFIG' }, '');
    console.log('DOCKER_CONFIG environment variable unset');
}

let loginServer = core.getInput('login-server', { required: true });
        let authenticationToken = new Buffer(`${username}:${password}`).toString('base64');
        let config = {
            "auths": {
                [loginServer]: {
                    auth: authenticationToken
                }
            }
        };
        const runnerTempDirectory = process.env['RUNNER_TEMP']; // Using process.env until the core libs are updated
        const dirPath = path.join(runnerTempDirectory, `docker_login_${Date.now()}`);
        yield io.mkdirP(dirPath);
        const dockerConfigPath = path.join(dirPath, `config.json`);
        core.debug(`Writing docker config contents to ${dockerConfigPath}`);
        fs.writeFileSync(dockerConfigPath, JSON.stringify(config));
        command_1.issueCommand('set-env', { name: 'DOCKER_CONFIG' }, dirPath);
        console.log('DOCKER_CONFIG environment variable is set');
    });
}

lines.split("\n").forEach(function(line, index, arr) {
            command.issueCommand('error', undefined, line)
          })
        }