pub fn import_step(text: &str) -> Result<Vec<BrepSolid>, String>Expand description
Public entry: parse a STEP Part 21 document and return one BrepSolid per
MANIFOLD_SOLID_BREP, FACETED_BREP, or certified BREP_WITH_VOIDS. Every
returned solid passes validate() and closes its shells’ vector area to
the import’s bar; a file with a body the closure gate refuses is refused
as a whole (see import_step_bodies).