Returns an overview of the members of a group.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/workmail/list-group-members.html
| aws workmail list-group-members --organization-id m-d281d0a2fd824be5b6cd3d3ce909fd27 --group-id S-1-1-11-1122222222-2222233333-3333334444-4444 |
| list-group-members — AWS CLI 1.16.15 Command Reference : http://docs.aws.amazon.com/goto/aws-cli/workmail-2017-10-01/ListGroupMembers |