Add definition to mosaic using nem-sdk

    /**
     * Adds mosaic information to balance mosaics
     * @param balance array of mosaics
     * @param network selected network
     * @return Promise with altered balance
     */
    private _addDivisibilityToBalance(balance, network) {
        var promises = [];

        for (let mosaic of balance.data) {
            //function where you call to get the mosaic Definition
            promises.push(this.getMosaicsMetaDataPair(mosaic.mosaicId.namespaceId, mosaic.mosaicId.name, network));
        }

        return Promise.all(promises).then(values => {
                var i = 0;
                for (let mosaic of balance.data) {
                    mosaic.definition = values[i][mosaic.mosaicId.namespaceId + ':' + mosaic.mosaicId.name].mosaicDefinition;
                    ++i;
                }
                return balance;
            }
        );
    }