Constructor with all fields.
204 {},
fl::vector< fl::string > params
Parameter names (optional)
fl::string name
Method name (REQUIRED)
fl::vector< fl::string > tags
Tags for grouping (optional)
Callable fn
Function to register (REQUIRED)
fl::RpcMode mode
Execution mode (SYNC or ASYNC, default SYNC)
fl::string description
Method description (optional)
Configuration for method registration with optional metadata.