be assigned to. The subroutine must return a modifiable value such
as a scalar variable, as described in L<perlsub>.
+This module allows one to set this attribute on a subroutine that is
+already defined. For Perl subroutines (XSUBs are fine), it may or may not
+do what you want, depending on the code inside the subroutine, with details
+subject to change in future Perl versions. You may run into problems with
+lvalue context not being propagated properly into the subroutine, or maybe
+even assertion failures. For this reason, a warning is emitted if warnings
+are enabled. In other words, you should only do this if you really know
+what you are doing. You have been warned.
+
=item method
Indicates that the referenced subroutine is a method. A subroutine so marked