function Get-PublishedDataSources {
    <#
.SYNOPSIS
    Get and return the data sources from a SOAP webservice, a SQL Reports Server

.PARAMETER Proxy
    A SOAP proxy for the SQL Reports Server

.PARAMETER Folder
    The reports folder to look for Data Sources in

#>
    [CmdletBinding()]
    Param(
        [Parameter(Position = 0, Mandatory = $true)]
        [System.Web.Services.Protocols.SoapHttpClientProtocol]$Proxy,

        [Parameter(Position = 1, Mandatory = $true)]
        [Alias("reportfolder")]
        [string]$Folder
    )
    $logLead = Get-LogLeadName

    if ($folder[0] -ne "/") {
        Write-Verbose ("$logLead : Transform {0} => /{0}" -f $folder)
        $folder = "/" + $folder
    }

    Write-Verbose ("$logLead : Querying children of {0}" -f $folder)
    $datasources = $proxy.ListChildren($folder, $false) | Where-Object {$_.TypeName -eq "DataSource"}

    Write-Verbose ("$logLead : {0} datasource objects located." -f $datasources.Count)
    return $datasources
}