PdbDataTypeParser getDataTypeParser() {
		if (program == null) {
			throw new AssertException("Parser was not constructed with program");
		}
		if (dataTypeParser == null) {
			dataTypeParser = new PdbDataTypeParser(program.getDataTypeManager(), service, monitor);
		}
		return dataTypeParser;
	}
Determine if the PDB has previously been loaded for the specified program.
@param program  program for which to find a matching PDB
@return true if PDB has already been loaded
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb/PdbParser.java