EditorUtil.createNewDiagramFile(
DiagramFileCreator diagramFileCreator,
IPath containerFullPath,
java.lang.String fileName,
java.io.InputStream initialContents,
java.lang.String kind,
Shell shell,
IProgressMonitor progressMonitor,
PreferencesHint preferencesHint)
Creates a new diagram file resource in the selected container and with
the selected name.