public void execute(final SNode node, final EditorContext editorContext) {
   EditorCell selectedCell = editorContext.getSelectedCell();
   if (!(selectedCell.isReferenceCell())) {
     return;
   }
   SNode contextNode =
       SNodeOperations.cast(
           selectedCell.getSNode(), "jetbrains.mps.lang.core.structure.BaseConcept");
   if (contextNode == null) {
     return;
   }
   String role = selectedCell.getRole();
   if (SNodeOperations.isInstanceOf(
       contextNode, "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation")) {
     SNode attributedNode =
         SNodeOperations.cast(
             SNodeOperations.getParent(contextNode),
             "jetbrains.mps.lang.core.structure.BaseConcept");
     assert attributedNode != null;
     AttributeOperations.setAttribute(
         attributedNode,
         new IAttributeDescriptor.LinkAttribute(
             SConceptOperations.findConceptDeclaration(
                 "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation"),
             role),
         null);
     return;
   }
   if (AttributeOperations.getAttribute(
           contextNode,
           new IAttributeDescriptor.LinkAttribute(
               SConceptOperations.findConceptDeclaration(
                   "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation"),
               role))
       != null) {
     AttributeOperations.setAttribute(
         contextNode,
         new IAttributeDescriptor.LinkAttribute(
             SConceptOperations.findConceptDeclaration(
                 "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation"),
             role),
         null);
   } else {
     SNode referenceAntiquotation =
         SNodeFactoryOperations.setNewAttribute(
             contextNode,
             new IAttributeDescriptor.LinkAttribute(
                 SConceptOperations.findConceptDeclaration(
                     "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation"),
                 role),
             "jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation");
     if (selectedCell.isSingleNodeCell()) {
       SPropertyOperations.set(
           referenceAntiquotation,
           "label",
           SPropertyOperations.getString(
               SNodeOperations.getConceptDeclaration(contextNode), "name"));
     }
   }
 }
 public void execute(final SNode node, final EditorContext editorContext) {
   EditorCell cell = editorContext.getSelectedCell();
   String linkRole = QueriesUtil.getEditedLinkRole(cell);
   SNode referentNode = QueriesUtil.getEditedLinkReferentNode(cell);
   SNode result =
       SNodeFactoryOperations.setNewAttribute(
           referentNode,
           new IAttributeDescriptor.LinkAttribute(
               SConceptOperations.findConceptDeclaration(
                   "jetbrains.mps.lang.editor.editorTest.structure.ReferenceAnnotataion"),
               linkRole),
           "jetbrains.mps.lang.editor.editorTest.structure.ReferenceAnnotataion");
 }
    public void execute(final SNode node, final EditorContext editorContext) {
      DocCommentHelper.addJavadocLangIfMissing(node);

      if ((AttributeOperations.getAttribute(
              node,
              new IAttributeDescriptor.NodeAttribute(
                  SConceptOperations.findConceptDeclaration(
                      "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment")))
          == null)) {
        SNodeFactoryOperations.setNewAttribute(
            node,
            new IAttributeDescriptor.NodeAttribute(
                SConceptOperations.findConceptDeclaration(
                    "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment")),
            "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment");
        SNode line =
            SNodeFactoryOperations.addNewChild(
                AttributeOperations.getAttribute(
                    node,
                    new IAttributeDescriptor.NodeAttribute(
                        SConceptOperations.findConceptDeclaration(
                            "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment"))),
                "body",
                "jetbrains.mps.baseLanguage.javadoc.structure.CommentLine");
        SNodeFactoryOperations.addNewChild(
            line, "part", "jetbrains.mps.baseLanguage.javadoc.structure.TextCommentLinePart");
      } else {
        AttributeOperations.setAttribute(
            node,
            new IAttributeDescriptor.NodeAttribute(
                SConceptOperations.findConceptDeclaration(
                    "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment")),
            null);
      }
      editorContext.select(
          ListSequence.fromList(
                  SLinkOperations.getTargets(
                      AttributeOperations.getAttribute(
                          node,
                          new IAttributeDescriptor.NodeAttribute(
                              SConceptOperations.findConceptDeclaration(
                                  "jetbrains.mps.baseLanguage.javadoc.structure.FieldDocComment"))),
                      "body",
                      true))
              .first());
    }
 @Override
 public void execute(final SNode node, final EditorContext editorContext) {
   EditorCell_Property cell = (EditorCell_Property) editorContext.getSelectedCell();
   String propertyName = ((PropertyAccessor) cell.getModelAccessor()).getPropertyName();
   SNode cellNode = cell.getSNode();
   SNodeFactoryOperations.setNewAttribute(
       cellNode,
       new IAttributeDescriptor.PropertyAttribute(
           MetaAdapterFactory.getConcept(
               0xd4615e3bd6714ba9L,
               0xaf012b78369b0ba7L,
               0x108a9cb4795L,
               "jetbrains.mps.lang.pattern.structure.PropertyPatternVariableDeclaration"),
           propertyName),
       SNodeFactoryOperations.asInstanceConcept(
           MetaAdapterFactory.getConcept(
               0xd4615e3bd6714ba9L,
               0xaf012b78369b0ba7L,
               0x108a9cb4795L,
               "jetbrains.mps.lang.pattern.structure.PropertyPatternVariableDeclaration")));
 }