Fluent typed setter mirroring toolAnnotations(): encodes a typed
ToolAnnotations into the raw annotations Json so callers never have to
hand-build the .toJson() themselves (symmetric with the typed
Resource/ResourceTemplate.annotations write path). An empty
ToolAnnotations clears the field (leaves it Json.undefined), so it is
omitted from the serialized form. The raw-Json storage is unchanged, so
unknown annotation keys set via annotations directly still round-trip.
Fluent typed setter mirroring toolAnnotations(): encodes a typed ToolAnnotations into the raw annotations Json so callers never have to hand-build the .toJson() themselves (symmetric with the typed Resource/ResourceTemplate.annotations write path). An empty ToolAnnotations clears the field (leaves it Json.undefined), so it is omitted from the serialized form. The raw-Json storage is unchanged, so unknown annotation keys set via annotations directly still round-trip.