A file the document uses, such as a STEP model it imports: where it is, uri relative to the
document's own location in the store that keeps it (an absolute URL is allowed), and the SHA-256
of its bytes, which an asset an import reads must carry, so the document's version pins the
geometry it reads and a changed file is refused. mediaType names the format; for OCCT's BREP it
records the format version, such as model/vnd.occt.brep; version=3.
A file the document uses, such as a STEP model it imports: where it is,
urirelative to the document's own location in the store that keeps it (an absolute URL is allowed), and the SHA-256 of its bytes, which an asset an import reads must carry, so the document's version pins the geometry it reads and a changed file is refused.mediaTypenames the format; for OCCT's BREP it records the format version, such asmodel/vnd.occt.brep; version=3.