code: @Override
      public void visitCode(Code obj) {
          fbInfo.clear();
          loadedReg = -1;
  
          CodeException[] exc = obj.getExceptionTable();
          if (exc != null) {
              for (CodeException ce : exc) {
                  if ((ce.getCatchType() == 0) && (ce.getStartPC() == ce.getHandlerPC())) {
                      fbInfo.add(new FinallyBlockInfo(ce.getStartPC()));
                  }
              }
          }
  
          if (!fbInfo.isEmpty()) {
              try {
                  super.visitCode(obj);
              } catch (StopOpcodeParsingException e) {
                  // no more finally blocks to check
              }
          }
      }
docs: overrides the visitor to collect finally block info.
  
  @param obj
  the code object to scan for finally blocks