alias_attribute (ActiveSupport::CoreExtensions::Module)

    # File lib/active_support/core_ext/module/aliasing.rb, line 65
          def alias_attribute(new_name, old_name)
            module_eval "def \#{new_name}; self.\#{old_name}; end          # def subject; self.title; end\ndef \#{new_name}?; self.\#{old_name}?; end        # def subject?; self.title?; end\ndef \#{new_name}=(v); self.\#{old_name} = v; end  # def subject=(v); self.title = v; end\n", __FILE__, __LINE__+1
          end