code: def transit_export_key(self, name, key_type, version=None, mount_point='transit'):
          
          if version is not None:
              url = '/v1/{0}/export/{1}/{2}/{3}'.format(mount_point, key_type, name, version)
          else:
              url = '/v1/{0}/export/{1}/{2}'.format(mount_point, key_type, name)
          return self._adapter.get(url).json()
docs: GET /<mount_point>/export/<key_type>/<name>(/<version>)
  
          :param name:
          :type name:
          :param key_type:
          :type key_type:
          :param version:
          :type version:
          :param mount_point:
          :type mount_point:
          :return:
          :rtype: