Macro rename_enum 

macro_rules! rename_enum {
    ( $cb:expr,
      $c_name:literal => $rust_name:literal
      $(, remove: $remove:literal)*
      $(, case: $case:ident)?
      $(, $itm:literal => $ren:literal)*
      $(,)?
    ) => { ... };
}

Macro to help define renaming rules for an enum and its values. See an example in the Renamer documentation.