code: function marshallItem(data, options) {
      return AWS.DynamoDB.Converter.input(data, options).M;
    }
docs: Convert a JavaScript object into a DynamoDB record.
  
  @param data [any] The data to convert to a DynamoDB record
  @param options [map]
  @option options convertEmptyValues [Boolean] Whether to automatically
  convert empty strings, blobs,
  and sets to `null`
  @option options wrapNumbers [Boolean]  Whether to return numbers as a
  NumberValue object instead of
  converting them to native JavaScript
  numbers. This allows for the safe
  round-trip transport of numbers of
  arbitrary size.
  
  @return [map] An object in the DynamoDB record format.
  
  @example Convert a JavaScript object into a DynamoDB record
  var marshalled = AWS.DynamoDB.Converter.marshall({
  string: 'foo',
  list: ['fizz', 'buzz', 'pop'],
  map: {
  nestedMap: {
  key: 'value',
  }
  },
  number: 123,
  nullValue: null,
  boolValue: true,
  stringSet: new DynamoDBSet(['foo', 'bar', 'baz'])
  });