{ { PATHS { create_index_paths_clause | alter_index_paths_clause } }
  | { path_table_clause
    | path_id_clause
    | order_key_clause
    | xmlindex_value_clause
    }
    [parallel_clause]
  | ASYNC ( SYNC { ALWAYS
                 | MANUAL
                 | EVERY repeat_interval
                 | ON COMMIT 
                 } [ STALE ({FALSE | TRUE}) ]
          )
}