code: @Override
      public boolean addRelationship(Context context,
                                     String pid,
                                     String relationship,
                                     String object,
                                     boolean isLiteral,
                                     String datatype) throws ServerException {
          return mgmt.addRelationship(context,
                                      pid,
                                      relationship,
                                      object,
                                      isLiteral,
                                      datatype);
      }
docs: {@inheritDoc}