developer/api/v1/users/Get-AuthorizedGroup.ps1

function Get-AuthorizedGroup
{
    param(
        [Parameter(Mandatory)]
        [string] $AppAlias,
        [Parameter(Mandatory)]
        [string] $VersionAlias,
        [Parameter(Mandatory)]
        [string] $GroupName
    )

    return Invoke-Api Get "/developer/api/v1/apps/$AppAlias/versions/$VersionAlias/groups/group/?groupName=$GroupName"
}