DMN13 — Incorrect grammar rule references and missing UnaryTests section in MM

As discussed in the RTF call on Feb 5th, we need to fix:

1.Refs to grammar rules at end of ch9 are incorrect (change 14 to 12 and check others)
2. grammar rule 14 in ch10 is unused and should be removed
3. UnaryTests UML class is missing from the spec (it is shown on one diagram not the defining occurrence
Need to specify this MM class and point to the correct unary tests grammar rule that defines its syntax (this will be different for FEEL and SFEEL)

Fix grammar rule references and add UnaryTests MM

Specification Text
See revised text.

Metamodel

• In Figure 7.6, Change UnaryTests class to inherit from Expression rather than directly from DMNElement
• See attached Fig7_6

XML Schema

• Correct tExpression to make the typeRef attribute optional (as shown in the metamodel of Fig 7.6)
• make tUnaryTests extend tExpression instead of tDMNElement

Backward Compatibility Argument

• Expressions that do specify a typeRef will still be valid when the typeRef in the XSD is corrected to be optional
• UnaryTests that do not specify a typeRef will still be valid because the typeRef is optional