core/module.rbs in rbs-1.1.1 vs core/module.rbs in rbs-1.2.0

@@ -156,10 +156,10 @@
   #
   # *produces:*
   #
   #     Exiting with code 99
   #
-  def alias_method: (Symbol new_name, Symbol old_name) -> self
+  def alias_method: (::Symbol | ::String new_name, ::Symbol | ::String old_name) -> ::Symbol
 
   # Returns a list of modules included/prepended in *mod* (including *mod*
   # itself).
   #
   #     module Mod