public void showHiddenItems(boolean showHiddenItems) {
        this.showHiddenItems = showHiddenItems;
    }
This method is used to dictate whether hidden files and folders should be shown or not

@param showHiddenItems whether hidden items should be shown or not
android/modules/module_filepicker/src/main/java/com/nononsenseapps/filepicker/FilePickerFragment.java