Empty IAM Groups Check

AWSTemplateFormatVersion: '2010-09-09'
Description: ''
Resources:
  ConfigRule:
    Type: 'AWS::Config::ConfigRule'
    Properties:
      ConfigRuleName: iam-group-has-users-check
      Scope:
        ComplianceResourceTypes:
          - 'AWS::IAM::Group'
      Description: A Config rule that checks whether IAM groups have at least one IAM user.
      Source:
        Owner: AWS
        SourceIdentifier: IAM_GROUP_HAS_USERS_CHECK
Parameters: {}
Metadata: {}
Conditions: {}