@Override
	default boolean isDefined() {
		// NOTE: from DataDB, it seems this is true even if the dataType is Undefined
		// It just cannot by DataType.DEFAULT
		return true;
	}
A base interface for implementations of {@link TraceData}

<p>
This behaves somewhat like a mixin, allowing it to be used on defined data units as well as data
components, e.g., fields of a struct data unit.
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/database/listing/DBTraceDefinedDataAdapter.java