@Override
    public void configure(Map<String, ?> props) {
        ConfigPropertyFilterConfig config = new ConfigPropertyFilterConfig(props);
        excludePattern = config.excludePattern();
        useDefaultsFrom = config.useDefaultsFrom();
    }
Filters excluded property names or regexes.
connect/mirror/src/main/java/org/apache/kafka/connect/mirror/DefaultConfigPropertyFilter.java