code: function consoleHandler(entry) {
    if (typeof console === 'undefined' || !console) {
      return;
    }
  
    var timestamp = new Date(entry.timestamp);
    var msg =
        '[' + timestamp.getUTCFullYear() + '-' +
        pad(timestamp.getUTCMonth() + 1) + '-' +
        pad(timestamp.getUTCDate()) + 'T' +
        pad(timestamp.getUTCHours()) + ':' +
        pad(timestamp.getUTCMinutes()) + ':' +
        pad(timestamp.getUTCSeconds()) + 'Z] ' +
        '[' + entry.level.name + '] ' +
        entry.message;
  
    var level = entry.level.value;
    if (level >= Level.SEVERE.value) {
      console.error(msg);
    } else if (level >= Level.WARNING.value) {
      console.warn(msg);
    } else {
      console.log(msg);
    }
  }
docs: Logs all messages to the Console API.
  @param {!Entry} entry the entry to log.