code: public void setCallbackURLs(java.util.Collection<String> callbackURLs) {
          if (callbackURLs == null) {
              this.callbackURLs = null;
              return;
          }
  
          this.callbackURLs = new java.util.ArrayList<String>(callbackURLs);
      }
docs: <p>
  A list of allowed redirect (callback) URLs for the identity providers.
  </p>
  <p>
  A redirect URI must:
  </p>
  <ul>
  <li>
  <p>
  Be an absolute URI.
  </p>
  </li>
  <li>
  <p>
  Be registered with the authorization server.
  </p>
  </li>
  <li>
  <p>
  Not include a fragment component.
  </p>
  </li>
  </ul>
  <p>
  See <a href="https://tools.ietf.org/html/rfc6749#section-3.1.2">OAuth 2.0 - Redirection Endpoint</a>.
  </p>
  <p>
  Amazon Cognito requires HTTPS over HTTP except for http://localhost for testing purposes only.
  </p>
  <p>
  App callback URLs such as myapp://example are also supported.
  </p>
  
  @param callbackURLs
  A list of allowed redirect (callback) URLs for the identity providers.</p>
  <p>
  A redirect URI must:
  </p>
  <ul>
  <li>
  <p>
  Be an absolute URI.
  </p>
  </li>
  <li>
  <p>
  Be registered with the authorization server.
  </p>
  </li>
  <li>
  <p>
  Not include a fragment component.
  </p>
  </li>
  </ul>
  <p>
  See <a href="https://tools.ietf.org/html/rfc6749#section-3.1.2">OAuth 2.0 - Redirection Endpoint</a>.
  </p>
  <p>
  Amazon Cognito requires HTTPS over HTTP except for http://localhost for testing purposes only.
  </p>
  <p>
  App callback URLs such as myapp://example are also supported.