Why does this code warned unreachable in Groovy?

Question

I was thinking to return a map with several directories list. But the very first caused a warning for me:

def enlistFiles() {

    return
        [downloadFolder: downloadFolder.listFiles( new FileFilter() {
            @Override
            boolean accept(File file) {
                return !file.isDirectory()
            }
        })]

}

"Code unreachable"

Why?

Answer 1

Anything below line 3 will not be executed. The return key word should not be followed by a line break. Your code should be:

def enlistFiles() {
    return [downloadFolder: downloadFolder.listFiles( new FileFilter() {
            @Override
            boolean accept(File file) {
                return !file.isDirectory()
            }
        })]

}