Get-AuthorizationHeader.ps1

function Get-AuthorizationHeader
{
    Param
    (
        [Parameter(Mandatory=$true)]
        [string] $ClientID,
        [Parameter(Mandatory=$true)]
        [string] $RedirectUri
    )

    $token = Get-AuthToken -ClientID $ClientID -RedirectUri $RedirectUri

    $authHeader = @{
        'Content-Type'='application/json'
        'Authorization'=$token.CreateAuthorizationHeader()
    }

    return $authHeader
}