[NETBEANS-8233] When creating a doc comment tree from a full body, avoid the spliting and merging of the body, and simply use the full body, so that the code generator sees the correct, unsplit, full body.

[NETBEANS-8233] When creating a doc comment tree from a full body, avoid the spliting and merging of the body, and simply use the full body, so that the code generator sees the correct, unsplit, full body. #12127