{"ast_node_type":"other","tokens":[{"end":132,"kind":"keyword","start":0,"text":"//"}]}
    // Experimental lang items for `MCP: Low level components for async drop`(https://github.com/rust-lang/compiler-team/issues/727)
    DefaultTrait4,           sym::default_trait4,      default_trait4_trait,       Target::Trait,          GenericRequirement::None;