docs: public static int findNotIn(byte[] arra, int start, int limit,
                                  byte[] charset) {
  
          int k = 0;
  
          for (; k < limit; k++) {
              for (int i = 0; i < charset.length; i++) {
                  if (arra[k] == charset[i]) {
                      continue;
                  }
              }
  
              return k;
          }
  
          return -1;
      }