@Override
    public String getEncryptionType() {
      return getStringOrDefault(ENCRYPTION_BYTES, Function.identity(), null);
    }
Remove a configuration setting represented by the key from the {@link #configuration} map.
@return this (for chained invocation)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.java