@org.apache.thrift.annotation.Nullable
  public java.util.Map<java.lang.String,java.lang.String> getConfiguration() {
    return this.configuration;
  }
Returns true if field name is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TNamespaceDescriptor.java