With this mixin: ``` // Mixin until gradle is upda...

# gradle

[jlleitschuh]

With this mixin:

// Mixin until gradle is updated to support this
fun FileTree.matching(filterConfigAction: Action<in PatternFilterable>) : FileTree {
    val patternSet = PatternSet()
    filterConfigAction.execute(patternSet)
    return matching(patternSet)
}