old_contents: from django.db.models import Model
  from django.db.models import TextField, ManyToManyField, CharField
  from yunity.base.base_models import BaseModel, LocationModel
  from config import settings
  
  
  class Group(BaseModel, LocationModel):
      name = CharField(max_length=settings.NAME_MAX_LENGTH)
      description = TextField(blank=True)
      members = ManyToManyField(settings.AUTH_USER_MODEL, related_name='groups')
      password = CharField(max_length=255, blank=True)
  
new_contents: from django.db.models import TextField, ManyToManyField, CharField
  from yunity.base.base_models import BaseModel, LocationModel
  from config import settings
  
  
  class Group(BaseModel, LocationModel):
      name = CharField(max_length=settings.NAME_MAX_LENGTH)
      description = TextField(blank=True)
      members = ManyToManyField(settings.AUTH_USER_MODEL, related_name='groups')
      password = CharField(max_length=255, blank=True)
  
subject: Remove unused import