@NotNull <P extends JpsElement> SourceFolder addSourceFolder(@NotNull String url,
                                                               @NotNull JpsModuleSourceRootType<P> type,
                                                               boolean isAutomaticallyImported);
@NotNull <P extends JpsElement> SourceFolder addSourceFolder(@NotNull String url,
                                                               @NotNull JpsModuleSourceRootType<P> type,
                                                               boolean isAutomaticallyImported)