public void setPermissionGroupId(String permissionGroupId) {
        this.permissionGroupId = permissionGroupId;
    }
<p>
The unique identifier for the permission group.
</p>

@param permissionGroupId
       The unique identifier for the permission group.
aws-java-sdk-finspacedata/src/main/java/com/amazonaws/services/finspacedata/model/ListUsersByPermissionGroupRequest.java