val dirPath = dir.toPath()
            Files.walk(dirPath).use { paths ->
                paths.filter { !it.toFile().isDirectory }
                    .limit(4)
                    .map { dirPath.relativize(it).toString() }
                    .collect(Collectors.toList())
            }
        }?.filter {
            it.value.isNotEmpty()
        } ?: emptyMap()

    /**

            "-PtestJavaVendor=$testJvmVendor"
        ) +
            listOf(buildScanTag(buildScanTag)) +
            buildScanValues.map { buildScanCustomValue(it.key, it.value) }
        ).filter { it.isNotBlank() }.joinToString(separator = " ")
}

fun functionalTestParameters(os: Os): List<String> {
    return listOf(
        "-PteamCityBuildId=%teamcity.build.id%",
        os.javaInstallationLocations(),

    }

    val typeParameters: List<ApiTypeUsage> by unsafeLazy {
        context.apiTypeParametersFor(visitedSignature)
    }

    val functions: List<ApiFunction> by unsafeLazy {
        delegate.methods.filter(::isSignificantDeclaration).map { ApiFunction(asmLevel, incubatingAnnotationTypeDescriptor, this, it, context) }
    }

    private
    fun singleAbstractMethodOf(classNode: ClassNode) =

        val subprojectRoots = File("../platforms").listFiles(File::isDirectory).plus(File("../subprojects"))
        val subProjectFolders = subprojectRoots.map { it.listFiles(File::isDirectory).asList() }.flatten().filter { dir ->
            // filter out the directories that have only a `build` subdirectory - this usually happens after branch switching
            dir.listFiles { _: File, name: String -> name != "build" }!!.isNotEmpty()
        }

Run the `./gradlew sanityCheck` task again to make sure there are no more errors.

#### Filtering changes by severity

There is a somewhat non-obvious filter present on the page that allows you to control which type of messages are displayed.
The filter is a dropdown box that appears when you click the `Severity ⬇️ ` label in the black header bar to the immediate right of the Gradle version.

        }
    }

    private
    fun assertLeftoverFilesCleanedUpEventually(vararg leftoverFiles: String) {
        leftoverFiles.forEach {
            assertTrue(projectDir.resolve(it).walk().filter { it.isFile }.toList().isEmpty())
        }
    }

    @Test
    fun `fail build if leftover file found and test passes`() {

                val duration = it as JSONObject
                val testProject = duration["testProject"] as String
                duration.entries
                    .filter { (key, _) -> key != "testProject" }
                    .map { (osString, timeInMs) ->
                        val os = Os.valueOf(osString.uppercase(Locale.US))

private
fun kotlinDslApiExtensionsDeclarationsFor(
    api: ApiTypeProvider,
    sinceSupplier: (String) -> String?,
    apiSpec: ApiSpec
): Sequence<KotlinExtensionFunction> =

    api.allTypes()
        .filter { type -> type.isPublic && apiSpec.isApi(type.sourceName) }
        .flatMap { type -> kotlinExtensionFunctionsFor(type, sinceSupplier) }
        .distinctBy(::signatureKey)


private

                    """
                    @file:Incubating
                    package com.example

                    import org.gradle.api.Incubating

                    ${annotatedKotlinMembers.lineSequence().filter { !it.contains("Incubating") }.joinToString("\n")}

                    /** @since 2.0 */
                    const val cathedral = "cathedral"
                    """
                )
            }