functions/Get-DbaPbmObjectSet.ps1

function Get-DbaPbmObjectSet {
    <#
        .SYNOPSIS
            Returns object sets from policy based management.
 
        .DESCRIPTION
            Returns object sets from policy based management.
 
        .PARAMETER SqlInstance
            SQL Server name or SMO object representing the SQL Server to connect to. This can be a collection and receive pipeline input to allow the function to be executed against multiple SQL Server instances.
 
        .PARAMETER SqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER ObjectSet
            Filters results to only show specific object set
 
        .PARAMETER IncludeSystemObject
            By default system objects are filtered out. Use this parameter to include them.
 
        .PARAMETER InputObject
            Allows piping from Get-DbaPbmStore
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .NOTES
            Tags: Policy, PolicyBasedManagement, PBM
            Author: Chrissy LeMaire (@cl), netnerds.net
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            https://dbatools.io/Get-DbaPbmObjectSet
 
        .EXAMPLE
            PS C:\> Get-DbaPbmObjectSet -SqlInstance sql2016
 
            Returns all object sets from the sql2016 PBM instance
 
        .EXAMPLE
            PS C:\> Get-DbaPbmObjectSet -SqlInstance sql2016 -SqlCredential $cred
 
            Uses a credential $cred to connect and return all object sets from the sql2016 PBM instance
    #>

    [CmdletBinding()]
    param (
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,
        [Alias("Credential")]
        [PSCredential]$SqlCredential,
        [string[]]$ObjectSet,
        [Parameter(ValueFromPipeline)]
        [Microsoft.SqlServer.Management.Dmf.PolicyStore[]]$InputObject,
        [switch]$IncludeSystemObject,
        [switch]$EnableException
    )
    process {
        foreach ($instance in $SqlInstance) {
            Write-Message -Level Verbose -Message "Connecting to $instance"
            $InputObject += Get-DbaPbmStore -SqlInstance $instance -SqlCredential $SqlCredential
        }
        foreach ($store in $InputObject) {
            $all = $store.ObjectSets

            if (-not $IncludeSystemObject) {
                $all = $all | Where-Object IsSystemObject -eq $false
            }

            if ($ObjectSet) {
                $all = $all | Where-Object Name -in $ObjectSet
            }

            foreach ($currentset in $all) {
                Write-Message -Level Verbose -Message "Processing $currentset"
                Add-Member -Force -InputObject $currentset -MemberType NoteProperty ComputerName -value $store.ComputerName
                Add-Member -Force -InputObject $currentset -MemberType NoteProperty InstanceName -value $store.InstanceName
                Add-Member -Force -InputObject $currentset -MemberType NoteProperty SqlInstance -value $store.SqlInstance
                Select-DefaultView -InputObject $currentset -Property ComputerName, InstanceName, SqlInstance, Id, Name, Facet, TargetSets, IsSystemObject
            }
        }
    }
}