public PulsarSourceBuilder<OUT> setConfig(Configuration config) {
        configBuilder.set(config);
        return this;
    }
Set arbitrary properties for the PulsarSource and Pulsar Consumer. The valid keys can be
found in {@link PulsarSourceOptions} and {@link PulsarOptions}.

@param config the config to set for the PulsarSource.
@return this PulsarSourceBuilder.
inlong-sort/sort-flink/sort-flink-v1.18/sort-connectors/pulsar/src/main/java/org/apache/inlong/sort/pulsar/source/PulsarSourceBuilder.java