STEP Description field for a part

[ws256]

Hello!
STEP files contain two text fields for a product/part:
Name (designation) — usually short, like "A1234-01."
Description (name) — for example, "Engine Mount Bracket."

occt-import-js only returns Name — because in STEP, it's the first argument to PRODUCT.
How do I get names and descriptions from PRODUCT_DEFINITION or PRODUCT_DEFINITION_FORMATION?