# File lib/mail/fields/content_id_field.rb, line 11
    def initialize(value = nil, charset = 'utf-8')
      self.charset = charset
      @uniq = 1
      if value.blank?
        value = generate_content_id
      else
        value = strip_field(FIELD_NAME, value)
      end
      super(CAPITALIZED_FIELD, strip_field(FIELD_NAME, value), charset)
      self.parse
      self
    end