--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: To change an annotation's value in place for a given class or module it first must be duplicated, otherwise the change may effect annotations in the class or module's ancestors.
full_name: Module#ann!
is_singleton: false
name: ann!
params: ( ref, keys_or_class=nil, keys=nil )
visibility: public