private static Set<String> getPreviousExceptionNames(List<Type> list, ASTNode missingNode) {
   Set<String> previousNames = new HashSet<>();
   for (int i = 0; i < list.size() && missingNode != list.get(i); i++) {
     Type curr = list.get(i);
     previousNames.add(ASTNodes.getTypeName(curr));
   }
   return previousNames;
 }