Type Alias SubtreeProvider 

pub type SubtreeProvider = Arc<dyn Fn(&PartialParse<'_>) -> Vec<String> + Send + Sync>;

Type alias for group-level context-aware completion providers (TODO item 7). Receives a structured PartialParse of the command line state and returns candidates to merge into the completer’s output.

Aliased Type

pub struct SubtreeProvider { /* private fields */ }