PS> Workflow WFProcess {Get-Process}
PS> WFProcess -AsJob -JobName WFProcessJob -PSPrivateMetadata @{MyCustomId = 92107}
PS> Get-Job -Filter @{MyCustomId = 92107}
Id     Name            State         HasMoreData     Location             Command
--     ----            -----         -----------     --------             -------
1      WFProcessJob    Completed     True            localhost            WFProcess