private DIEAggregate getAggregateByIndex(int dieIndex) {
		DebugInfoEntry die = getDIEByIndex(dieIndex);
		return getAggregate(die);
	}
Returns the {@link DIEAggregate} that contains the specified {@link DebugInfoEntry}.

@param die {@link DebugInfoEntry} or null
@return {@link DIEAggregate} that contains the specified DIE, or null if DIE null or
the aggregate was not found.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFProgram.java