| `@link:{javadocPath}/org/gradle/api/tasks/InputFile.html[InputFile]`
| `File`*
| A single input file (not directory)

| `@link:{javadocPath}/org/gradle/api/tasks/InputDirectory.html[InputDirectory]`
| `File`*
| A single input directory (not file)

| `@link:{javadocPath}/org/gradle/api/tasks/InputFiles.html[InputFiles]`
| `Iterable<File>`*
| An iterable of input files and directories

    override fun transform(outputs: TransformOutputs) {
        val inputFile = inputArtifact.get().asFile
        println("Transforming ${inputFile.name}...")
        outputs.file("${inputFile.nameWithoutExtension}-summary.txt").run {
            writeText("${inputFile.name}: ${inputFile.length()}")
        }
    }
}

import org.gradle.api.provider.ProviderFactory
import org.gradle.api.services.internal.BuildServiceProvider
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.InputFile
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.LocalState
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.Optional
import org.gradle.api.tasks.OutputDirectories

Here are some examples of the different types of arguments that the `source` property can take:

====
include::sample[dir="snippets/files/inputFiles/kotlin",files="build.gradle.kts[tags=set-input-files]"]
include::sample[dir="snippets/files/inputFiles/groovy",files="build.gradle[tags=set-input-files]"]
====

One other thing to note is that properties like `source` have corresponding methods in core Gradle tasks.

    }

    static class AsyncWithLocalState extends Async {
        @LocalState
        File localStateFile
    }

    static class AsyncWithInputFile extends Async {
        @InputFile
        File inputFile
    }

    static class AsyncWithInputDirectory extends Async {
        @InputDirectory
        File inputDirectory
    }

    static class BrokenTask extends DefaultTask {

====
[.multi-language-sample]
=====
.build.gradle.kts
[source,kotlin]
----
tasks {
    myTask {
        inputFiles.from(configurations.classpath.incoming.artifactView {
            attributes {
                // Add attributes to select a different type of artifact
            }
        }.files)
    }
}