def actualOrder = CollectionUtils.toList(filesByRelativePath.keySet())
        assertEquals(actualOrder, expectedOrder)
        this
    }

    def containsDescendants(String... relativePaths) {
        for (String path : relativePaths) {
            assertContainsFile(path)
        }
        this
    }

    def doesNotContainDescendants(String... relativePaths) {