https://doc.rust-lang.org/stable/nightly-rustc/rustc_type_ir/data_structures/delayed_map/struct.DelayedSet.html
DelayedSet in rustc_type_ir::data_structures::delayed_map - Rust
API documentation for the Rust `DelayedSet` struct in crate `rustc_type_ir`.
ir datarustctypestructuresdelayed