Macro cml_core_wasm::impl_wasm_map_get

macro_rules! impl_wasm_map_get {
    ($self:ident, $key:ident, $key_wasm_abi:tt, $val_wasm_abi:tt, $val_copy:tt, $rust_key:ty) => { ... };
}

This shouldn’t be explicitly called - only via impl_wasm_* macros here