def getSourceContainer(self):
        sourceComponent = self.getSourceComponent()
        if isinstance(sourceComponent, IViewer):
            return sourceComponent.getContainerDataSource()
        else:
            # this should not happen
            return None
Returns the container data source from which the transfer occurs.
dataset/ETHPy150Open rwl/muntjac/muntjac/event/data_bound_transferable.py/DataBoundTransferable.getSourceContainer