@Nullable
  public static JpsAntArtifactExtension getPostprocessingExtension(@NotNull JpsArtifact artifact) {
    return artifact.getContainer().getChild(JpsAntArtifactExtensionImpl.POSTPROCESSING_ROLE);
  }
@Nullable
  public static JpsAntArtifactExtension getPostprocessingExtension(@NotNull JpsArtifact artifact)