generateMissingPrefixes property

Controls automatic generation of namespace prefixes for IRIs without matching prefixes.

When set to true (default), the encoder will automatically generate namespace prefixes for IRIs that don't have a matching prefix in either the custom prefixes or the standard namespace mappings.

The prefix generation process:

1. Attempts to extract a meaningful namespace from the IRI (splitting at '/' or '#')
2. Skips IRIs with only protocol specifiers (e.g., "http://")
3. Only generates prefixes for namespaces ending with '/' or '#' (proper RDF namespace delimiters)
4. Uses RdfNamespaceMappings.getOrGeneratePrefix to create a compact, unique prefix

Setting this to false will result in all IRIs without matching prefixes being written as full IRIs in the JSON-LD output.

Applies to JsonLdOutputMode.compact and JsonLdOutputMode.flattened. Has no effect in JsonLdOutputMode.expanded (which has no @context).