The following example demonstrates an incremental task that has a directory input.
It assumes that the directory contains a collection of text files and copies them to an output directory, reversing the text within each file:

[[taskDefinition]]
====
include::sample[dir="snippets/tasks/incrementalTask/kotlin",files="build.gradle.kts[tags=incremental-task]"]
include::sample[dir="snippets/tasks/incrementalTask/groovy",files="build.gradle[tags=incremental-task]"]