@Override
    public int hashCode() {
        return Objects.hash(opType, configEntry);
    }
(For list-type configuration entries only.) Removes the specified values from the current
value of the configuration entry. It is legal to remove values that are not currently in the
configuration entry. Removing all entries from the current configuration value leaves an empty
list and does NOT revert to the default value of the entry.
clients/src/main/java/org/apache/kafka/clients/admin/AlterConfigOp.java