protected BinaryReader br(byte... bytes) {
		return new BinaryReader(new ByteArrayProvider(bytes), dwarfProg.isLittleEndian());
	}
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