IntelliJ IDEA will update the source code accordingly.Editing PlantUML Sequence Diagrams in VSCode (by Author) To delete the existing links, select the ones you don't need and press Delete.

You can select the icon on the diagram toolbar to draw relationship links between elements in your graph.

You can view members of the class, add new, delete the existing ones, see implementations, check parent classes, perform basic refactoring, add notes, and so on. When working with diagrams, use the context menu in the diagram editor to perform different tasks. To save the diagram as a file, right-click the diagram editor and from the context menu, select Export Diagram | Export to File and then the file extension in which you want to save the diagram. This might be helpful, when you generate a diagram on a package that contains inner packages. When you click through classes in the graph, IntelliJ IDEA greys out classes that do not reside in the same package. IntelliJ IDEA follows the UML conventions in showing relationships between the classes. You can click the icon to see class dependencies. The protected methods are displayed with modifier icons next to them. IntelliJ IDEA displays members with visibility not less than protected, such as public, package local, and protected ones. For example, to view protected methods, click on the diagram toolbar and select protected from the list. The lists are displayed based on the selected visibility level, which you can change. To see the list of methods, fields, and other code elements, select the appropriate icon on the diagram toolbar located on top of the diagram editor. You can press Ctrl+F12 on the element to view a list of diagram elements and navigate between them. Select VCS | Uncommitted Changes| Show Local Changes as UML Ctrl+Alt+Shift+D. You can view your VCS local changes as a diagram. IntelliJ IDEA generates a UML diagram for classes and their dependencies. In the list that opens, select Java Class Diagram. In the Project tool window, right-click a package for which you want to create a diagram and select Diagrams | Show Diagram Ctrl+Alt+Shift+U). Such diagrams always reflect the structure of actual classes and methods in your application. IntelliJ IDEA lets you generate a diagram on a package in your project.

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