file("input.txt") << "input"

        file("buildSrc/src/main/groovy/SimpleCopy.groovy") << declareSimpleCopyTaskType()

        file("buildSrc/build.gradle") << guavaDependency("15.0")

        buildFile """
            task copy(type: SimpleCopy) {
                input = file("input.txt")
                output = file("output.txt")
            }
        """