una/plugins/chargebee/ChargeBee/Models/Card.php

<?php

class ChargeBee_Card extends ChargeBee_Model
{

  protected $allowed = array('customerId', 'status', 'gateway', 'firstName', 'lastName', 'iin', 'last4', 'cardType',
'expiryMonth', 'expiryYear', 'billingAddr1', 'billingAddr2', 'billingCity', 'billingStateCode','billingState', 'billingCountry', 'billingZip', 'ipAddress', 'maskedNumber');



  # OPERATIONS
  #-----------

  public static function retrieve($id, $env = null, $headers = array())
  {
    return ChargeBee_Request::send(ChargeBee_Request::GET, ChargeBee_Util::encodeURIPath("cards",$id), array(), $env, $headers);
  }

  public static function updateCardForCustomer($id, $params, $env = null, $headers = array())
  {
    return ChargeBee_Request::send(ChargeBee_Request::POST, ChargeBee_Util::encodeURIPath("customers",$id,"credit_card"), $params, $env, $headers);
  }

  public static function deleteCardForCustomer($id, $env = null, $headers = array())
  {
    return ChargeBee_Request::send(ChargeBee_Request::POST, ChargeBee_Util::encodeURIPath("customers",$id,"delete_card"), array(), $env, $headers);
  }

 }

?>