if (rightValue.isMissing()) {
                return rightValue;
            }

            return Value.present()
                .withSideEffect(SideEffect.fixedFrom(leftValue))
                .withSideEffect(SideEffect.fixedFrom(rightValue));
        }

        @Override

            if (rightValue.isMissing()) {
                return rightValue;
            }

            return Value.present()
                .withSideEffect(SideEffect.fixedFrom(leftValue))
                .withSideEffect(SideEffect.fixedFrom(rightValue));
        }

        @Override

            if (value.isMissing()) {
                return value.asType();
            }

            collector.add(value.getWithoutSideEffect(), collection);
            return Value.present().withSideEffect(SideEffect.fixedFrom(value));
        }

        @Override
        public boolean isProvidedBy(Provider<?> provider) {
            return Objects.equal(provider, this.provider);
        }

                // nullable because serialization may replace value with null, e.g. when using provider of Task
                ValueSupplier.ExecutionTimeValue.ofNullable(value).withSideEffect(sideEffect)
            }

            4.toByte() -> ValueSupplier.ExecutionTimeValue.changingValue<Any>(providerWithChangingValueCodec.run { decode() }!!.uncheckedCast())