@Override
    public PlcConnection getConnection(String url) throws PlcConnectionException {
        return getConnection(url, null);
    }
Mocking Driver that keeps a Map of references to Connections so that you can fetch a reference to a connection
which will be acquired by someone else (via the connection string).
This allows for efficient Mocking.
plc4j/drivers/mock/src/main/java/org/apache/plc4x/java/mock/MockDriver.java