message: Add docs for getCredentials
diff: @@ -204,8 +204,13 @@ export class GithubCredentialsProvider {
  ) {}
  /**
  - * @returns GithubCredentials.
  - * @param opts
  + * Returns GithubCredentials for requested url.
  + * Consecutive calls to this method with the same url will return cached credentials.
  + * The shortest lifetime for a token returned is 10 minutes.
  + * @param opts containing the organization or repository url
  + * @returns {Promise} of @type {GithubCredentials}.
  + * @example
  + * const { token, headers } = await getCredentials({url: 'github.com/backstage/foobar'})
  */
  async getCredentials(opts: { url: string }): Promise<GithubCredentials> {
  const parsed = gitUrlParse(opts.url);
  