code: def family(self):
      family = self.name[0]
      assert family in azure_disk_families
      return family
  
imports: import logging
  import re
  from typing import Dict, Optional, Tuple
  import sortedcontainers
  from ...globals import RESERVED_STORAGE_GB_PER_CORE
label_desc: Use image node_id 2 for calling the AzureDisk obj's underlying member method code with example usage: obj.family() and returns: family