Public/Get-DokuPageVersionData.ps1

function Get-DokuPageVersionData {
    [CmdletBinding()]
    [OutputType([psobject])]
    param
    (
        [Parameter(Mandatory = $true,
                   Position = 1,
                   ValueFromPipeline = $true,
                   ValueFromPipelineByPropertyName = $true,
                   HelpMessage = 'The full page name for which to return the data')]
        [ValidateNotNullOrEmpty()]
        [string[]]$FullName,
        [Parameter(Mandatory = $true,
                   Position = 2,
                   ValueFromPipeline = $true,
                   ValueFromPipelineByPropertyName = $true,
                   HelpMessage = 'The timestamp for which version to get the info from')]
        [ValidateNotNullOrEmpty()]
        [int]$VersionTimestamp,
        [Parameter(Position = 3,
                   HelpMessage = 'Return only the raw Data, rather than an object')]
        [switch]$Raw
    )

    begin {}

    process {
        foreach ($PageName in $FullName) {
            $APIResponse = Invoke-DokuApiCall -MethodName 'wiki.getPageVersion' -MethodParameters @($PageName,$VersionTimestamp)
            if ($APIResponse.CompletedSuccessfully -eq $true) {
                if ($Raw) {
                    $RawText = [string]($APIResponse.XMLPayloadResponse  | Select-Xml -XPath "//value/string").Node.InnerText
                    $RawText
                } else {
                    $PageObject = New-Object PSObject -Property @{
                        FullName = $PageName
                        VersionTimestamp = $VersionTimestamp
                        RawText = [string]($APIResponse.XMLPayloadResponse  | Select-Xml -XPath "//value/string").Node.InnerText
                        PageName = ($PageName -split ":")[-1]
                        ParentNamespace = ($PageName -split ":")[-2]
                        RootNamespace = ($PageName -split ":")[0]
                    }
                    $PageObject
                }
            } elseif ($null -eq $APIResponse.ExceptionMessage) {
                Write-Error "Fault code: $($APIResponse.FaultCode) - Fault string: $($APIResponse.FaultString)"
            } else {
                Write-Error "Exception: $($APIResponse.ExceptionMessage)"
            }
        }
    } # process

    end {}
}