By Peter Taggart, for CNN July 8, 2012 -- Updated 0110 GMT (0910 HKT) Adam Clayton wasn't in court for the sentencing of his former aide, but he gave evidence for the prosecution. Dublin, Ireland (CNN) -- The former personal assistant of Adam Clayton of the Irish rock band U2 was sentenced Friday to seven years in prison for stealing 2.8 million euros (about $3.45 million) of Clayton's money. Clayton -- the bass guitarist with U2 -- wasn't in court for sentencing but had given evidence for the prosecution during the case.