old_contents: class BasicCheck(object):
      def __init__(self, service):
          self.service = service
  
      def properties(self):
          return self.service.properties
  
      def get_ip_address(self):
          ip = [property_obj.value for property_obj in self.properties() if property_obj.name == 'IP Address']
          if ip:
            return ip[0]
          else:
            raise LookupError('IP Address property does not exist')
  
new_contents: class BasicCheck(object):
      def __init__(self, service):
          self.service = service
  
      def properties(self):
          return self.service.properties
  
      def get_ip_address(self):
          ip = [property_obj.value for property_obj in self.properties() if property_obj.name == 'IP Address']
          if ip:
              return ip[0]
          else:
              raise LookupError('IP Address property does not exist')
  
subject: Fix spacing in basic_check