@Override
	void initialize() throws IOException, PdbException, CancelledException {
		initializeValues();
		initializeGlobalOffsetsAndLengths();
		deserializeHashHeader();
	}
Deserializes and intializes {@link GlobalSymbolInformation} basic information from the
appropriate stream in the Pdb so that later queries can be made
@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/GlobalSymbolInformation.java