.Trace!: ClassType
.Trace!.
    __call__: (
        count := Nat,
        trace := Nat,
        countfuncs := Nat,
        countcallers := Nat,
        ignoremods := Iterable(Str),
        ignoredirs := Iterable(Str),
        infile := Str,
        outfile := Str,
        timing := Bool,
    ) -> Trace!
    run!: (self: RefMut(Trace!), cmd: Str) => NoneType
    results: (self: Ref(Trace!)) -> CoverageResults!

.CoverageResults!: ClassType
.CoverageResults!.
    update!: (self: RefMut(CoverageResults!), other: CoverageResults!) => NoneType
    write_results!: (
        self: Ref(CoverageResults!),
        show_missing := Bool,
        summary := Bool,
        coverdir := Str,
        ignore_missing_files := Bool,
    ) => NoneType