code: def do_capture(self, authorizationid, amt, completetype='Complete',
                     **kwargs):
          
          kwargs.update(self._sanitize_locals(locals()))
          return self._call('DoCapture', **kwargs)
docs: Shortcut for the DoCapture method.
  
          Use the TRANSACTIONID from DoAuthorization, DoDirectPayment or
          DoExpressCheckoutPayment for the ``authorizationid``.
  
          The `amt` should be the same as the authorized transaction.