return CachingDisabledReasonCategory.VALIDATION_FAILURE;
            default:
                throw new AssertionError();
        }
    }

    @Override
    public List<String> getUpToDateMessages() {
        return executionReasons;
    }

    @Override
    public boolean isIncremental() {
        return incremental;
    }

         * Null if execution did not get so far as to test “up-to-date-ness”.
         * Empty if tested, but task was considered up to date.
         */
        @Nullable
        List<String> getUpToDateMessages();

        /**
         * Returns if this task was executed incrementally.
         *
         * See {@code org.gradle.work.InputChanges#isIncremental()}.
         */

            return new DefaultTaskSkippedResult(startTime, endTime, state.getSkipMessage(), incremental);
        } else {
            List<String> executionReasons = result != null ? result.getUpToDateMessages() : null;
            Throwable failure = finishEvent.getFailure();
            if (failure == null) {