The Grails Framework 3.1.7

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(Quick Reference) # version ## Purpose Used to disable optimistic locking or change the column that holds the version. ## Examples
    class Book {
        …
        static mapping = {
            version false
        }
    }
## Description Usage: `version(string/boolean)` By default GORM is configured with optimistic locking enabled. You can disable this by calling the `version` method with an argument of `false`:
    static mapping = {
        version false
    }
You can pass the name to the `version` method to change the name of the database column:
    static mapping = {
        version 'revision_number'
    }
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