public DIEAggregate getParent() {
		DebugInfoEntry die = getHeadFragment();
		DebugInfoEntry parent = die.getParent();
		return getProgram().getAggregate(parent);
	}
Returns the first {@link DebugInfoEntry DIE} fragment, ie. the spec or abstract_origin
DIE.
@return first DIE of this aggregate
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DIEAggregate.java