How to use the @jenkins-cd/blueocean-core-js.UrlConfig.getRestBaseURL function in @jenkins-cd/blueocean-core-js

fetchExecutorInfo() {
        Fetch.fetchJSON(`${UrlConfig.getRestBaseURL()}/organizations/${AppConfig.getOrganizationName()}/computers/`)
        .then(response => {
            this.setComputers(response.computers);
        });
    }
}

checkPipelineNameAvailable(name) {
        const path = UrlConfig.getRestBaseURL();
        const checkUrl = Utils.cleanSlashes(`${path}/organizations/${this.organization}/pipelines/${name}`);

        const fetchOptions = {
            method: 'GET',
            headers: {
                'Content-Type': 'application/json',
            },
        };

        return this._fetch(checkUrl, { fetchOptions }).then(() => false, () => true);
    }

function getCredentialsUrl(organization) {
    const path = UrlConfig.getRestBaseURL();
    return Utils.cleanSlashes(`${path}/organizations/${organization}/credentials/user/`);
}

listAllCredentials() {
        const path = UrlConfig.getRestBaseURL();
        const searchUrl = Utils.cleanSlashes(`${path}/search?q=type:credential;organization:${this.organization}`, false);

        return this._fetch(searchUrl)
            .then(data => capabilityAugmenter.augmentCapabilities(data))
            .then(creds => this._listAllCredentialsSuccess(creds), error => this._listAllCredentialsFailure(error));
    }

createPipeline(repositoryUrl, credentialId, name) {
        const path = UrlConfig.getRestBaseURL();
        const createUrl = Utils.cleanSlashes(`${path}/organizations/${this.organization}/pipelines`);

        const requestBody = {
            name,
            $class: 'io.jenkins.blueocean.blueocean_git_pipeline.GitPipelineCreateRequest',
            scmConfig: {
                uri: repositoryUrl,
                credentialId,
            },
        };

        const fetchOptions = {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
            },

checkPipelineNameAvailable(name) {
        const path = UrlConfig.getRestBaseURL();
        const checkUrl = Utils.cleanSlashes(`${path}/organizations/${this.organization}/pipelines/${name}`);

        const fetchOptions = {
            method: 'GET',
            headers: {
                'Content-Type': 'application/json',
            },
        };

        return this._fetch(checkUrl, { fetchOptions }).then(() => false, () => true);
    }
}