function checkVisa() {  // eslint-disable-line no-unused-vars
  canMakePaymentHelper([{
    supportedMethods: 'visa',
  }]);
}
/**
 * Merchant checks for ability to pay using "visa".
 */
Merchant checks for ability to pay using "visa".
Merchant checks for ability to pay using " visa " .
function checkVisa() {  
  canMakePaymentHelper([{
    supportedMethods: 'visa',
  }]);
}
function checkVisa ( ) { canMakePaymentHelper ( [ { supportedMethods : 'visa' , } ] ) ; }
Merchant checks for ability to pay using "visa".
Merchant checks for ability to pay using " visa " .
// eslint-disable-line no-unused-vars