public bool TryResolveResource(FontResourceKind kind, string name, scoped out ReadOnlyMemory<byte> data)
ISO 32000-2 §9.7.5.2 (Table 116) and §9.10.2. Names are matched exactly (ordinal, case-sensitive); the data is the text of the upstream CMap file (Adobe TN 5014 syntax) and stays valid and unchanged for the life of the process.