IResource fileResource = ResourcesPlugin.getWorkspace().getRoot().findMember(platformString);
if (fileResource != null) {
IProject project = fileResource.getProject();
final String parentDiagramName = uriTrimmed.trimFileExtension().lastSegment();
IFile file = project.getFile(String.format(ActivitiConstants.DIAGRAM_FOLDER + "%s.%s" + ActivitiConstants.DATA_FILE_EXTENSION,
parentDiagramName, subProcess.getId()));
Diagram diagram = GraphitiUiInternal.getEmfService().getDiagramFromFile(file, new ResourceSetImpl());