Windows PowerShell command on Get-command Unregister-Event

NAME
    Unregister-Event
    
SYNOPSIS
    Cancels an event subscription.
    
    
SYNTAX
    Unregister-Event [-SourceIdentifier]  [-Confirm] [-Force] [-WhatIf] []
    
    Unregister-Event [-SubscriptionId]  [-Confirm] [-Force] [-WhatIf] []
    
    
DESCRIPTION
    The Unregister-Event cmdlet cancels an event subscription that was created by using the Register-EngineEvent, 
    Register-ObjectEvent, or Register-WmiEvent cmdlet.
    
    When an event subscription is canceled, the event subscriber is deleted from the session and the subscribed events 
    are no longer added to the event queue. When you cancel a subscription to an event created by using the New-Event 
    cmdlet, the new event is also deleted from the session. Unregister-Event does not delete events from the event 
    queue. To delete events, use the Remove-Event cmdlet.
    

PARAMETERS
    -Confirm []
        Prompts you for confirmation before running the cmdlet.
        
        Required?                    false
        Position?                    named
        Default value                False
        Accept pipeline input?       False
        Accept wildcard characters?  false
        
    -Force []
        Cancels all event subscriptions, including subscriptions that were hidden by using the SupportEvent parameter 
        of Register-ObjectEvent , Register-WmiEvent , and Register-EngineEvent .
        
        Required?                    false
        Position?                    named
        Default value                False
        Accept pipeline input?       False
        Accept wildcard characters?  false
        
    -SourceIdentifier 
        Specifies a source identifier that this cmdlet cancels event subscriptions.
        
        A SourceIdentifier or SubscriptionId parameter must be included in every command.
        
        Required?                    true
        Position?                    0
        Default value                None
        Accept pipeline input?       True (ByPropertyName)
        Accept wildcard characters?  false
        
    -SubscriptionId 
        Specifies a source identifier ID that this cmdlet cancels event subscriptions.
        
        A SourceIdentifier or SubscriptionId parameter must be included in every command.
        
        Required?                    true
        Position?                    0
        Default value                None
        Accept pipeline input?       True (ByPropertyName)
        Accept wildcard characters?  false
        
    -WhatIf []
        Shows what would happen if the cmdlet runs. The cmdlet is not run.
        
        Required?                    false
        Position?                    named
        Default value                False
        Accept pipeline input?       False
        Accept wildcard characters?  false
        
    
        This cmdlet supports the common parameters: Verbose, Debug,
        ErrorAction, ErrorVariable, WarningAction, WarningVariable,
        OutBuffer, PipelineVariable, and OutVariable. For more information, see 
        about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216). 
    
INPUTS
    System.Management.Automation.PSEventSubscriber
        You can pipe the output from Get-EventSubscriber to Unregister-Event .
    
    
OUTPUTS
    None
        This cmdlet does not return any output.
    
    
NOTES
    
    
        * Events, event subscriptions, and the event queue exist only in the current session. If you close the current 
        session, the event queue is discarded and the event subscription is canceled. Unregister-Event cannot delete 
        events created by using the New-Event cmdlet unless you have subscribed to the event by using the 
        Register-EngineEvent cmdlet. To delete a custom event from the session, you must remove it programmatically or 
        close the session.
        
        *
    
    Example 1: Cancel an event subscription by source identifier
    
    PS C:\>Unregister-Event -SourceIdentifier "ProcessStarted"
    
    This command cancels the event subscription that has a source identifier of ProcessStarted.
    
    To find the source identifier of an event, use the Get-Event cmdlet. To find the source identifier of an event 
    subscription, use the Get-EventSubscriber cmdlet.
    Example 2: Cancel an event subscription by subscription identifier
    
    PS C:\>Unregister-Event -SubscriptionId 2
    
    This command cancels the event subscription that has a subscription identifier of 2.
    
    To find the subscription identifier of an event subscription, use the Get-EventSubscriber cmdlet.
    Example 3: Cancel all event subscriptions
    
    PS C:\>Get-EventSubscriber -Force | Unregister-Event -Force
    
    This command cancels all event subscriptions in the session.
    
    The command uses the Get-EventSubscriber cmdlet to get all event subscriber objects in the session, including the 
    subscribers that are hidden by using the SupportEvent parameter of the event registration cmdlets.
    
    It uses a pipeline operator (|) to send the subscriber objects to Unregister-Event , which deletes them from the 
    session. To complete the task, the Force parameter is also required on Unregister-Event .
    
RELATED LINKS
    Online Version: http://go.microsoft.com/fwlink/?LinkId=821868
    Get-Event 
    Get-EventSubscriber 
    New-Event 
    Register-EngineEvent 
    Register-ObjectEvent 
    Remove-Event 
    Unregister-Event 
    Wait-Event