{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"#[derive(Debug,"}]}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Decodable, Encodable, HashStable)]
// An empty set indicates that all parameters are used.
pub struct UnusedGenericParams(FiniteBitSet<u32>);