code: def organisation_logo_path(feature, parent):
      
      _ = feature, parent  # NOQA
      organisation_logo_file = setting(
          inasafe_organisation_logo_path['setting_key'])
      if os.path.exists(organisation_logo_file):
          return organisation_logo_file
      else:
          LOGGER.info(
              'The custom organisation logo is not found in {logo_path}. '
              'Default organisation logo will be used.').format(
              logo_path=organisation_logo_file)
          return inasafe_default_settings['organisation_logo_path']
docs: Retrieve the full path of used specified organisation logo.