Union createUnion(String name) {
		SymbolPath path = new SymbolPath(name);
		return new UnionDataType(getCategory(path.getParent(), true), path.getName(), dataMgr);
	}
Checks if PDB has been loaded in the program

@return whether PDB has been loaded or not
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb/PdbParser.java