check function safely in addPrePostSendCallback @bug W-3610994@ @rev tbliss@
check function safely in addPrePostSendCallback
@bug W-3610994@
@rev tbliss@

forcedotcom/aura,forcedotcom/aura,madmax983/aura,forcedotcom/aura,madmax983/aura,madmax983/aura,madmax983/aura,forcedotcom/aura,forcedotcom/aura,madmax983/aura,madmax983/aura