@Override
    public InputStream getChildInputStream(final String type) {
        final InternalSource childSource = getChild(type);
        if (childSource != null) {
            return childSource.getInputStream();
        }
        return null;
    }
Creates a new file system stream source.

@return A new file system source.
stroom-data/stroom-data-store-impl-fs/src/main/java/stroom/data/store/impl/fs/FsSource.java