question: public @ CheckForNull Block createNewBlock ( @ Nonnull String userName ) { int nextAutoBlockRef = lastAutoBlockRef + 1 ; StringBuilder b = new StringBuilder ( "IB:AUTO:" ) ; String nextNumber = paddedNumber . format ( nextAutoBlockRef ) ; b . append ( nextNumber ) ; return createNewBlock ( b . toString ( ) , userName ) ; }
target:  Method to create a new Block using an automatically incrementing system name.