private Map<String, Object> unprefixed(Map<String, Object> parsedConfig) {
                final Map<String, Object> unprefixedParsedConfig = new HashMap<>(parsedConfig.size());
                for (Map.Entry<String, Object> e : parsedConfig.entrySet()) {
                    if (e.getKey().startsWith(keyPrefix)) {
                        unprefixedParsedConfig.put(unprefixed(e.getKey()), e.getValue());
                    }
                }
                return unprefixedParsedConfig;
            }
Returns a new recommender instance that delegates to the base recommender but unprefixes the input parameters along the way.
clients/src/main/java/org/apache/kafka/common/config/ConfigDef.java