private static Memory getMemory(DefaultPdbApplicator applicator) throws PdbException {
		Program program = applicator.getProgram();
		if (program == null) {
			throw new PdbException("Program null for VbtManager");
		}
		return program.getMemory();
	}
Manages virtual base table lookup for PDB classes.
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/PdbVbtManager.java