created AssignAll method to Buffer
created AssignAll method to Buffer

RapidProjectH2020/GVirtuS,raffmont/GVirtuS,raffmont/GVirtuS,RapidProjectH2020/GVirtuS,RapidProjectH2020/GVirtuS,RapidProjectH2020/GVirtuS,raffmont/GVirtuS,raffmont/GVirtuS