{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//!"}]}
//!   - `specialize(Variant1, Variant1(p0, p1, p2)) := (p0, p1, p2)`
//!
//!   - `specialize(Foo{ bar, baz, quz }, Foo { bar: p0, baz: p1, .. }) := (p0, p1, _)`