code: public boolean doesNotContainContinueOrBreak(Instruction _start, Instruction _extent) {
        boolean ok = true;
        boolean breakOrContinue = false;
        for (Instruction i = _start; i != null; i = i.getNextExpr()) {
           if (i.isBranch()) {
              if (i.asBranch().isForwardUnconditional() && i.asBranch().getTarget().isAfter(_extent)) {
                 breakOrContinue = true;
              } else {
                 ok = false;
                 break;
              }
           }
        }
        if (ok) {
           if (breakOrContinue) {
              for (Instruction i = _start; i != null; i = i.getNextExpr()) {
                 if (i.isBranch() && i.asBranch().isForwardUnconditional() && i.asBranch().getTarget().isAfter(_extent)) {
                    i.asBranch().setBreakOrContinue(true);
                 }
              }
           }
        }
        return (ok);
     }
docs: Determine whether the sequence of instructions from _start to _extent is free of branches which extend beyond _extent.
  
  As a side effect, if we find a possible branch it is likely a break or continue so we mark the conditional as such.
  
  @param _start
  @param _extent
  @return