DDSXTY14 — Serialized size not defined for SCCIdentifier

The `getTypeDependencies` operation (7.6.3.3.4.1) returns `TypeIdentifierWithSize`. The returned collection must use the SCCIdentifier for Strongly Connected Components. This begs the question, what is the size of the TypeObject corresponding to an SCCIdentifier?

Step (d) of the algorithm in 7.3.4.9.2 may imply that it is the serialized size of a sequence of TypeObjects of the components but there is nothing explicit.

Clarify the size associated with a SCCIdentifier

Define serialized size of the TypeObject associated with a SCCIdentifier as the serialized size of the sequence<TypeObject> that contains all the types in the SCC