<@U19P7SPFW> <@U0QBCLV62> What is the recommended ...

# gradle

[jlleitschuh]

@eskatos @bamboo What is the recommended way to create a FileCollection in plugins?
This is what the spotless plugin is doing but UnionFileCollection is an internal api.

UnionFileCollection union = new UnionFileCollection();
for (SourceSet sourceSet : javaPlugin.getSourceSets()) {
    union.add(sourceSet.getAllSource().filter(file -> {
        String name = file.getName();
        return name.endsWith(".kt") || name.endsWith(".kts");
    }));
}