docs: public static int find(byte[] arra, int start, int limit, byte[] arrb) {
  
          int k = start;
  
          limit = limit - arrb.length + 1;
  
          int value = arrb[0];
  
          for (; k < limit; k++) {
              if (arra[k] == value) {
                  if (arrb.length == 1) {
                      return k;
                  }
  
                  if (containsAt(arra, k, arrb)) {
                      return k;
                  }
              }
          }
  
          return -1;
      }