// invalid version range, so drop back to resolution from the repository
                return null;
            }
        }

        //
        // Here we just need to know that a version is fine to use but this validation we can do in our workspace
        // resolver.
        //

        /*

    }

    private void deepCopy(MavenProject project) {
        // disown the parent

        // copy fields
        file = project.file;
        basedir = project.basedir;

        // don't need a deep copy, they don't get modified or added/removed to/from - but make them unmodifiable to be
        // sure!
        if (project.getDependencyArtifacts() != null) {

    // The expressions help a lot, but we need a clean to pick up a directory of POMs, automatically load
    // them into a resolver, create the expression to extract the data to validate the Model, and the URI
    // to validate the properties. We also need a way to navigate from the Tex specification documents to

            this.modelCache = DefaultModelCache.newInstance(session, true);
        }

        ExecutorService createExecutor(int parallelism) {
            //
            // We need an executor that will not block.
            // We can't use work stealing, as we are building a graph
            // and this could lead to cycles where a thread waits for