Simplify rollback visitor for send blocks (#838)
Simplify rollback visitor for send blocks (#838)


clemahieu/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,SergiySW/raiblocks,SergiySW/raiblocks,clemahieu/raiblocks,SergiySW/raiblocks,SergiySW/raiblocks,clemahieu/raiblocks,SergiySW/raiblocks