lib/unmarshalingCommands.js
function unmarshalMap(item, unmarshal) {
  return transform(_.has('M'), _.compose(_.mapValues(unmarshal), _.property('M')), item);
}
function unmarshalMap(item, unmarshal) {
  return transform(_.has('M'), _.compose(_.mapValues(unmarshal), _.property('M')), item);
}
function unmarshalMap ( item , unmarshal ) { return transform ( _ . has ( 'M' ) , _ . compose ( _ . mapValues ( unmarshal ) , _ . property ( 'M' ) ) , item ) ; }
Converts DynamoDb "M" to object literal

@param item
@param unmarshal
@returns {*}
Converts DynamoDb M to object literal