code: def get_owner_emails(self, partial_owner_match=True):
          
          for tag in self.tags:
              if tag.key.lower() == 'owner':
                  rgx = re.compile(RGX_EMAIL_VALIDATION_PATTERN, re.I)
                  if partial_owner_match:
                      match = rgx.findall(tag.value)
                      if match:
                          return [NotificationContact('email', email) for email in match]
                  else:
                      match = rgx.match(tag.value)
                      if match:
                          return [NotificationContact('email', email) for email in match.groups()]
          return None
docs: Return a list of email addresses associated with the instance, based on tags
  
          Returns:
              List of email addresses if any, else None