@InputArtifact
                abstract Provider<FileSystemLocation> getInputArtifact()

                void transform(TransformOutputs outputs) {
                    def input = inputArtifact.get().asFile
                    println "processing [\${input.name}]"
                    assert input.file
                    for (def i : 1..parameters.multiplier.get()) {

val output: Provider<RegularFile> = layout.buildDirectory.file("myOutput.txt")

// If you really need the java.io.File for a non lazy API
output.get().asFile

// Or a path for a lazy String based API
output.map { it.asFile.path }
----
======
[.multi-language-sample]
======
.build.gradle
[source,groovy]
----

        def f1 = elements.get()

        then:
        f1*.asFile == [file1, file2]

        and:
        1 * callable.call() >> ["src1", "src2"]
        _ * fileResolver.resolve("src1") >> file1
        _ * fileResolver.resolve("src2") >> file2
        0 * _

        when:
        def f2 = elements.get()

        then:
        f2*.asFile == [file2]

        and:
        1 * callable.call() >> ["2"]

The former, now `@Deprecated` usage:

```groovy
tasks.named('test') {
    reports.junitXml.setDestination(layout.buildDirectory.file('reports/my-report-old').get().asFile) // DEPRECATED
}

```

can be replaced with:

```groovy
tasks.named('test') {
    reports.junitXml.outputLocation = layout.buildDirectory.dir('reports/my-report')
}
```