First, we have a concept of a `Full` push. Only `Full` pushes will recompute `PushContext` on change; otherwise this is skipped and the last `PushContext` is re-used. Note: even when `Full`, we try to copy as much from the previous `PushContext` as possible. For example, if only a `WasmPlugin` changed, we would not recompute services indexes.

      this.totalCount = elemCount + totalCount(left) + totalCount(right);
    }

    private void recomputeHeight() {
      this.height = 1 + max(height(left), height(right));
    }

    private void recompute() {
      recomputeMultiset();
      recomputeHeight();
    }

    private AvlNode<E> rebalance() {
      switch (balanceFactor()) {
        case -2:

      this.totalCount = elemCount + totalCount(left) + totalCount(right);
    }

    private void recomputeHeight() {
      this.height = 1 + max(height(left), height(right));
    }

    private void recompute() {
      recomputeMultiset();
      recomputeHeight();
    }

    private AvlNode<E> rebalance() {
      switch (balanceFactor()) {
        case -2:

	return c.loadType(dtype, pos, "")
}

// loadType recursively loads the requested dtype and its dependency graph.
func (c *typeConv) loadType(dtype dwarf.Type, pos token.Pos, parent string) *Type {
	// Always recompute bad pointer typedefs, as the set of such
	// typedefs changes as we see more types.
	checkCache := true
	if dtt, ok := dtype.(*dwarf.TypedefType); ok && c.badPointerTypedef(dtt) {
		checkCache = false
	}

  //      */
  //     public abstract class CheckedRecursiveAction extends RecursiveAction {
  //         protected abstract void realCompute() throws Throwable;

  //         public final void compute() {
  //             try {
  //                 realCompute();
  //             } catch (Throwable t) {
  //                 threadUnexpectedException(t);
  //             }
  //         }
  //     }

    reallyTestNoMatchThenMatch(matcher.precomputed().negate(), s);
  }

  private void doTestNoMatchThenMatch(CharMatcher matcher, String s) {
    reallyTestNoMatchThenMatch(matcher, s);
    reallyTestMatchThenNoMatch(matcher.negate(), s);
    reallyTestNoMatchThenMatch(matcher.precomputed(), s);
    reallyTestMatchThenNoMatch(matcher.negate().precomputed(), s);

    reallyTestNoMatchThenMatch(matcher.precomputed().negate(), s);
  }

  private void doTestNoMatchThenMatch(CharMatcher matcher, String s) {
    reallyTestNoMatchThenMatch(matcher, s);
    reallyTestMatchThenNoMatch(matcher.negate(), s);
    reallyTestNoMatchThenMatch(matcher.precomputed(), s);
    reallyTestMatchThenNoMatch(matcher.negate().precomputed(), s);

   * - median with compute taking a double-collection and with computeInPlace;
   * - quartiles with index and with indexes taking int-varargs, and with compute taking a
   *   double-collection and with computeInPlace;
   * - scale with index and with indexes taking int-varargs, and with all overloads of compute
   *   taking a double-collection and with computeInPlace;

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testCompute_absentToPresent() {
    assertEquals(
        "Map.compute(absent, functionReturningValue) should return value",
        v3(),
        getMap()
            .compute(
                k3(),
                (k, v) -> {
                  assertEquals(k3(), k);
                  assertNull(v);
                  return v3();

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testCompute_absentToPresent() {
    assertEquals(
        "Map.compute(absent, functionReturningValue) should return value",
        v3(),
        getMap()
            .compute(
                k3(),
                (k, v) -> {
                  assertEquals(k3(), k);
                  assertNull(v);
                  return v3();