}

        private <P> ActivationFrame nextFrame(String property, Function<P, InputLocationTracker> child) {
            @SuppressWarnings("unchecked")
            final Optional<P> parent = (Optional<P>) stk.peek().parent;
            return new ActivationFrame(property, parent.map(child));
        }

        @Override
        public Activation transformActivation(Activation target) {

      var_name='ANDROID_NDK_HOME',
      var_default=default_ndk_path,
      ask_for_var='Please specify the home path of the Android NDK to use.',
      check_success=valid_ndk_path,
      error_msg=('The path %s or its child file "source.properties" '
                 'does not exist.'))
  write_action_env_to_bazelrc('ANDROID_NDK_HOME', android_ndk_home_path)
  write_action_env_to_bazelrc(
      'ANDROID_NDK_API_LEVEL',

		// optimizations. Don't inline them.
		b := state.blockDebug[:f.NumBlocks()]
		for i := range b {
			b[i] = BlockDebug{}
		}
	}

	// A list of slots per Value. Reuse the previous child slices.
	if cap(state.valueNames) < f.NumValues() {
		old := state.valueNames
		state.valueNames = make([][]SlotID, f.NumValues())
		copy(state.valueNames, old)
	}
	vn := state.valueNames[:f.NumValues()]