lib/decorators/MarshallDecorator.js
function unmarshallWrapper (cb) {
  return function (err, value) {
    if (err) return cb(err);
    var m = unmarshall(value);
    cb(m.error, m.value);
  };
}
function unmarshallWrapper (cb) {
  return function (err, value) {
    if (err) return cb(err);
    var m = unmarshall(value);
    cb(m.error, m.value);
  };
}
function unmarshallWrapper ( cb ) { return function ( err , value ) { if ( err ) return cb ( err ) ; var m = unmarshall ( value ) ; cb ( m . error , m . value ) ; } ; }
Helper for unmarshalling values
provided to a callback.

@param {Object} cb
@return {Function} (err, marshalledValue)
Helper for unmarshalling values provided to a callback .