# Version 2
  def to
    name = "#{self.first_name} #{self.last_name if self.first_name}"
    name = self.company_name if name.nil? or name.strip.blank?
    name = "unknown destination" if name.nil? or name.strip.blank?
    name.strip
  end

  # Version 3
  def to
    return retval = [ "#{self.first_name} #{self.last_name}".strip, self.company_name ].join(", ") unless retval.blank?
    'unknown destination'
  end

  # Version 4
  def to
    human_name.blank? ? 'unknown destination' : human_name
  end

  private

  def human_name
    [ "#{self.first_name} #{self.last_name}".strip, self.company_name ].join(", ")
  end