863
863
if basis_revision_id == _mod_revision.NULL_REVISION:
864
864
new_inv = self._create_inv_from_null(delta, new_revision_id)
865
867
inv_lines = new_inv.to_lines()
866
868
return self._inventory_add_lines(new_revision_id, parents,
867
869
inv_lines, check_content=False), new_inv