public void goToDir(@NonNull T file) {
        if (!isLoading) {
            mCheckedItems.clear();
            mCheckedVisibleViewHolders.clear();
            refresh(file);
        }
    }
Browses to the designated directory. It is up to the caller verify that the argument is
in fact a directory. If another directory is in the process of being loaded, this method
will not start another load.
<p/>
Currently selected items are cleared by this operation.

@param file representing the target directory.
android/modules/module_filepicker/src/main/java/com/nononsenseapps/filepicker/AbstractFilePickerFragment.java