void initialize() throws IOException, PdbException, CancelledException {
		initializeCache(0.001);
		determineCvSigValues(); // new method for random-access symbol work
	}
Deserializes and initializes basic {@link SymbolRecords} information from the stream noted
in the DBI header so that later symbol queries can be done
@throws IOException on file seek or read, invalid parameters, bad file configuration, or
 inability to read required bytes
@throws PdbException upon not enough data left to parse
@throws CancelledException upon user cancellation
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb2/pdbreader/SymbolRecords.java