public Map<String, String> toMap() {
        synchronized (this.confData) {
            Map<String, String> ret = new HashMap<>(this.confData.size());
            for (Map.Entry<String, Object> entry : confData.entrySet()) {
                ret.put(entry.getKey(), entry.getValue().toString());
            }
            return ret;
        }
    }
Checks whether there is an entry for the given config option.

@param configOption The configuration option
@return <tt>true</tt> if a valid (current or deprecated) key of the config option is stored,
        <tt>false</tt> otherwise
inlong-sort/sort-common/src/main/java/org/apache/inlong/sort/configuration/Configuration.java