function Test-ConfigurationDataItemContainsKey {
    [CmdletBinding()]
    Param(
        [AllowNull()]
        $Item,
        [Parameter(Mandatory=$true)]
        [String]
        $KeyName
    )

    if($null -eq $Item){
        return $false
    }

    if($Item -is [System.Collections.IDictionary]){
        return $Item.Contains($KeyName)
    }

    return $null -ne $Item.PSObject.Properties[$KeyName]
}