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.....................................................................................................................................--- !ruby/object:RI::MethodDescription 
aliases: 
- !ruby/object:RI::AliasName 
  name: map!
block_params: (o)
comment: 
- !ruby/struct:SM::Flow::P 
  body: Do collect() destructively.
full_name: Set#collect!
is_singleton: false
name: collect!
params: () {|o| ...}
visibility: public