# File lib/mail/fields/message_id_field.rb, line 41
    def initialize(value = nil, charset = 'utf-8')
      self.charset = charset
      @uniq = 1
      if value.blank?
        self.name = CAPITALIZED_FIELD
        self.value = generate_message_id
      else
        super(CAPITALIZED_FIELD, strip_field(FIELD_NAME, value), charset)
      end
      self.parse
      self

    end