try {
            if (cells == as) { // Expand table unless stale
              Cell[] rs = new Cell[n << 1];
              for (int i = 0; i < n; ++i) rs[i] = as[i];
              cells = rs;
            }
          } finally {
            busy = 0;
          }
          collide = false;
          continue; // Retry with expanded table
        }
        h ^= h << 13; // Rehash

          try {
            if (cells == as) { // Expand table unless stale
              Cell[] rs = new Cell[n << 1];
              for (int i = 0; i < n; ++i) rs[i] = as[i];
              cells = rs;
            }
          } finally {
            busy = 0;
          }
          collide = false;
          continue; // Retry with expanded table
        }
        h ^= h << 13; // Rehash

          try {
            if (cells == as) { // Expand table unless stale
              Cell[] rs = new Cell[n << 1];
              for (int i = 0; i < n; ++i) rs[i] = as[i];
              cells = rs;
            }
          } finally {
            busy = 0;
          }
          collide = false;
          continue; // Retry with expanded table
        }
        h ^= h << 13; // Rehash