async listOne(request) {
        const version = await this.db.dataVersion('*', {
            sourceHash: request.getParameter('id'),
        }).findOne();

        if (version) request.response().status(200).send();
        else request.response().status(404).send();
    }
/**
     * returns on edata evrsion
     *
     * @return     {Promise}  data version
     */
returns on edata evrsion
@return     {Promise}  data version
returns on edata evrsion @return { Promise } data version
async listOne(request) {
        const version = await this.db.dataVersion('*', {
            sourceHash: request.getParameter('id'),
        }).findOne();
        if (version) request.response().status(200).send();
        else request.response().status(404).send();
    }
async listOne ( request ) { const version = await this . db . dataVersion ( '*' , { sourceHash : request . getParameter ( 'id' ) , } ) . findOne ( ) ; if ( version ) request . response ( ) . status ( 200 ) . send ( ) ; else request . response ( ) . status ( 404 ) . send ( ) ; }
returns on edata evrsion
 @return     {Promise}  data version
returns on edata evrsion @return { Promise } data version