问Apex触发器问题怎么做？

Create an Apex trigger for Opportunity that adds a task to any opportunity set to 'Closed Won'.

To complete this challenge, you need to add a trigger for Opportunity. The trigger will add a task to any opportunity inserted or updated with the stage of 'Closed Won'. The task's subject must be 'Follow Up Test Task'.

• The Apex trigger must be called 'ClosedOpportunityTrigger'
• With 'ClosedOpportunityTrigger' active, if an opportunity is inserted or updated with a stage of 'Closed Won', it will have a task created with the subject 'Follow Up Test Task'.
• To associate the task with the opportunity, fill the 'WhatId' field with the opportunity ID.
• This challenge specifically tests 200 records in one operation.