OclIsInvalid

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oclIsInvalid () : Boolean

Returns true if self is equal to *invalid*.

Expression	Result
let anObject : String = null in anObject.oclIsInvalid()	false
let anObject : String = invalid in anObject.oclIsInvalid()	true
let anObject : String = 'null' in anObject.oclIsInvalid()	false

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OCL