/**
   * Concatenates firstName and lastName.
   *
   * @param user The consumer.
   * @return The customers firstName and lastName.
   */
  @NonNull
  private String getCustomerName(final User user) {
    final StringBuilder customerName = new StringBuilder();
    if (!TextUtils.isEmpty(user.getFirstName())) {
      customerName.append(user.getFirstName());
    }

    if (!TextUtils.isEmpty(user.getLastName())) {
      customerName.append(" ").append(user.getLastName());
    }
    return customerName.toString();
  }