PaymentDetails => {
    endpoint => 'https://svcs.paypal.com/AdaptivePayments',
    soapaction => 'urn:PaymentDetails',
    namespace => 'http://svcs.paypal.com/services',
    parameters => [
      SOAP::Data->new(name => 'PaymentDetailsRequest', type => 'ap:PaymentDetailsRequest', attr => {}),
    ],
  },