The Grails Framework 5.3.2

(Quick Reference) ## delete ### Purpose Deletes a persistent instance. ### Examples
    def book = Book.get(1)
    book.delete()
### Description The `delete` method informs the persistence context that a persistent instance should be deleted. Equivalent to the Hibernate delete method.
| Calling `delete` on a transient instance will result in an error
Parameters: `flush` - If set to `true` the persistent context will be flushed resulting in the instance being deleted immediately. For example:
    def book = Book.get(1)
    book.delete(flush: true)
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