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

block_params: 
comment: 
- !ruby/struct:RDoc::Markup::Flow::P 
  :body: Equivalent to Set#flatten, but replaces the receiver with the result in place. Returns nil if no modifications were made.
full_name: Set#flatten!
is_singleton: false
name: flatten!
params: ()
visibility: public
