protected DIEAggregate getAggregate(DebugInfoEntry die) {
		return dwarfProg.getAggregate(die);
	}
Base class for unit tests needing DWARF DIEs.  Provides 2 DWARF compile-units and helper
methods to create DIE records.
Ghidra/Features/Base/src/test/java/ghidra/app/util/bin/format/dwarf/DWARFTestBase.java