--- !ruby/object:RI::MethodDescription 
aliases: 
- !ruby/object:RI::AliasName 
  name: msgid
block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: identity &amp; threading
full_name: TMail::Mail#message_id
is_singleton: false
name: message_id
params: ( default = nil )
visibility: public
