src/Mapper.js
function(data) {

            var map = _map,
                key;

            if (map && data) {
                for (key in data) {
                    if (key && data.hasOwnProperty(key)) {
                        _map[key] = data[key];
                    }
                }
            }

        }
function(data) {

            var map = _map,
                key;

            if (map && data) {
                for (key in data) {
                    if (key && data.hasOwnProperty(key)) {
                        _map[key] = data[key];
                    }
                }
            }

        }
function ( data ) { var map = _map , key ; if ( map && data ) { for ( key in data ) { if ( key && data . hasOwnProperty ( key ) ) { _map [ key ] = data [ key ] ; } } } }
Set the data to the mapper

Behaves like a Map object, if the key already exists
the last will override the existing

@param data
Set the data to the mapper