private PNode getBranch(String branchName) {
			for (PNode node : branches) {
				if (node.name.equals(branchName)) {
					return node;
				}
			}
			return null;
		}
Class used for collecting owner and parentage information for vxtptrs (and maybe base
classes... in the future).  Used for creating a tree of information that is used for
determining shortened MSFT parentage.
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/CppCompositeType.java