class Mail::ReferencesField

:nodoc:<br>mail.message_ids #=> [‘F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom’]<br><br>mail #=> ‘#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4<br>mail #=> ’#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4<br>mail #=> ‘#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4
mail.references #=> ’<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>‘
mail.references = ’<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>‘
mail = Mail.new
== Examples:
Message IDs.
Only one References field can appear in a header, though it can have multiple
enclosing angle brackets which per RFC are not syntactically part of the message id.
Note that, the #message_ids method will return an array of message IDs without the
module instance metods.
has a ReferencesField as its field type. This includes all Mail::CommonAddress
Sending references to a mail message will instantiate a Mail::Field object that
field in the email.
The References field inherits references StructuredField and handles the References: header
= References Field

def self.singular? 

def self.singular?
  true
end

def initialize(value = nil, charset = nil) 

def initialize(value = nil, charset = nil)
  value = value.join("\r\n\s") if value.is_a?(Array)
  super value, charset
end