x: Either an sf object or a "nb" neighbors list object. If an sf object, will be converted into a neighbors list via ww_build_neighbors().
wt: Either a "listw" object (which will be returned unchanged), a function for creating a "listw" object from x, or NULL, in which case weights will be constructed via spdep::nb2listw().
include_self: Include each region itself in its own list of neighbors?
...: Arguments passed to the weight constructing function.