How to use the deepdish.io.ls.SoftLinkNode function in deepdish

dtype = level._v_attrs.zeroarray_dtype
            node = NumpyArrayNode(tuple(level), _format_dtype(dtype))

        elif hasattr(level._v_attrs, 'strtype'):
            strtype = level._v_attrs.strtype
            itemsize = level._v_attrs.itemsize
            if strtype == b'unicode':
                shape = level.shape[:-1] + (level.shape[-1] // itemsize // 4,)
            elif strtype == b'ascii':
                shape = level.shape

            node = NumpyArrayNode(shape, strtype.decode('ascii'))

        return node
    elif isinstance(level, tables.link.SoftLink):
        node = SoftLinkNode(level.target)
        return node
    else:
        return Node()