pub const fn as_str(self) -> &'static str {
        match self {
            Self::Fast => "fast",
            Self::FastNoSignatures => "fast_no_sigs",
            Self::FastWithStorageLimit => "fast/storage_limit",
            Self::Legacy => "legacy",
        }
    }
Non-empty name for `criterion` benchmark naming.
core/tests/vm-benchmark/src/vm.rs