Refresh a Power BI Dataset with PowerShell

# Calls the Active Directory Authentication Library (ADAL) to authenticate against AAD
function GetAuthToken
{
    if(-not (Get-Module AzureRm.Profile)) {
        Import-Module AzureRm.Profile
    }
    $clientId = "*****"
    $redirectUri = "urn:ietf:wg:oauth:2.0:oob"
    $resourceAppIdURI = "https://analysis.windows.net/powerbi/api"
    $authority = "https://login.microsoftonline.com/common/oauth2/authorize";
    $authContext = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext" -ArgumentList $authority
    $authResult = $authContext.AcquireToken($resourceAppIdURI, $clientId, $redirectUri, "Auto")
    return $authResult
}

# Get the auth token from AAD
$token = GetAuthToken

# Building Rest API header with authorization token
$authHeader = @{
    'Content-Type'='application/json'
    'Authorization'=$token.CreateAuthorizationHeader()
}

# Refresh the dataset

$groupsPath = "*****"
$datasetID  = "*****"

$MailFailureNotify = @{"notifyOption"="MailOnFailure"}
$uri = "https://api.powerbi.com/v1.0/$groupsPath/datasets/$datasetID/refreshes"
Invoke-RestMethod -Uri $uri –Headers $authHeader –Method POST -Body $MailFailureNotify –Verbose