code: @Override
      protected void _from(ObjectInput in) throws IOException,
              ClassNotFoundException {
          documentTable = new DocumentTable();
          documentTable.readExternal(in);
          namespaceTable = new NamespaceTable();
          namespaceTable.readExternal(in);
          parameterTable = new ParameterTable();
          parameterTable.readExternal(in);
          termTable = new TermTable();
          termTable.readExternal(in);
          termParameterMapTable = new TermParameterMapTable();
          termParameterMapTable.readExternal(in);
          statementTable = new StatementTable();
          statementTable.readExternal(in);
          annotationDefinitionTable = new AnnotationDefinitionTable();
          annotationDefinitionTable.readExternal(in);
          annotationValueTable = new AnnotationValueTable();
          annotationValueTable.readExternal(in);
          statementAnnotationMapTable = new StatementAnnotationMapTable();
          statementAnnotationMapTable.readExternal(in);
          protoNodeTable = new ProtoNodeTable();
          protoNodeTable.readExternal(in);
          protoEdgeTable = new ProtoEdgeTable();
          protoEdgeTable.readExternal(in);
      }
docs: {@inheritDoc}