@Override
	public synchronized boolean endTransaction(int transactionID, boolean commit) {
		if (manager != null) {
			throw new UnsupportedOperationException();
		}
		return super.endTransaction(transactionID, commit);
	}
Returns shared instance of built-in data type manager.
@return the manager
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/BuiltInDataTypeManager.java