Rust's `todo!` macro actually standardizes this as "Not yet implemented" https://doc.rust-lang.org/src/core/macros/mod.rs.html#871 https://doc.rust-lang.org/src

Rust's `todo!` macro actually standardizes this as "Not yet implemented" https://doc.rust-lang.org/src/core/macros/mod.rs.html#871 https://doc.rust-lang.org/src/core/macros/mod.rs.html#871