\BeginKnitrBlock{rmdnote}<div class="rmdnote">For single simple feature geometries (`sfg`), `st_cast` also provides geometry casting from non-multi-types to multi-types (e.g., `POINT` to `MULTIPOINT`) and from multi-types to non-multi-types.
However, only the first element of the old object would remain in the second group of cases.</div>\EndKnitrBlock{rmdnote}