text: class IReport(object):
      """Interface for attendence reports"""
      def __init__(self, dak, semester):
          pass
  
      def get_url_anme(self):
          """Short name that can be used as a url parameter"""
          pass
  
      def get_mime_type(self):
          """Mime type for this data format."""
          pass
  
      def get_filename(self):
          """Returns a filename for this report."""
          pass
  
      def get_report_string(self):
          """File content data from export."""
          pass
  