| QName | Type | Fixed | Default | Use | Inheritable | Annotation | |
|---|---|---|---|---|---|---|---|
| defaultValue | xsd:string | optional |
|
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| expression | xsd:string | required |
|
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| expressionLanguage | ExpressionLanguageType | required |
|
<xsd:element name="PreCondition" type="ConditionExpressionType" minOccurs="0" maxOccurs="unbounded"/> |