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The Description element must be provided and should include a prose description. The MethodSignature element may must also be provided and identifies the input parameter and return values for the ConditionDef. The MethodSignature ReturnValue for ConditionDef must always equal boolean. The Description and MethodSignature are the normative content of the ConditionDef. The ConditionDef is referenced by the CollectionExceptionConditionOID attribute within a study metadata component which may be omitted under circumstances defined by the condition, i.e., when the FormalExpression evaluates to True.
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