public boolean containsKey(String key) {
        synchronized (this.confData) {
            return this.confData.containsKey(key);
        }
    }
Checks whether there is an entry with the specified key.

@param key key of entry
@return true if the key is stored, false otherwise
inlong-sort/sort-common/src/main/java/org/apache/inlong/sort/configuration/Configuration.java