kind property
Kind is the LSP SymbolKind number (5 class, 6 method, 12 function, 23 struct, …), passed through rather than translated to a word — these callers already speak LSP, and inventing a second vocabulary is how the two drift.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
int? kind;