code: def load_profile_include(self, include_directory):
          
  
          include_directory = os.path.join(self.app_path, include_directory)
          if not os.path.isdir(include_directory):
              msg = 'Provided include directory does not exist ({}).'.format(include_directory)
              sys.exit(msg)
  
          for filename in sorted(os.listdir(include_directory)):
              if filename.endswith('.json'):
                  fqfn = os.path.join(include_directory, filename)
                  self.load_profiles_from_file(fqfn)
docs: Load included configuration files.
  
          Args:
              include_directory (str): The path of the profile include directory.