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--- !ruby/object:RI::MethodDescription 
aliases: 
- !ruby/object:RI::AliasName 
  name: "<<"
block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Adds the given object to the set and returns self. Use <tt>merge</tt> to add several elements at once.
full_name: Set#add
is_singleton: false
name: add
params: (o)
visibility: public