Function Directory.rename

Renames (move) the from file to the to destination. Both arguments should be paths to files, either relative or absolute. If the destination file exists and is not access-protected, it will be overwritten. Returns one of the error code constants (OK on success).

godot.core.defs.GodotError rename (
  const(String) from,
  const(String) to
) nothrow @nogc;