v = value = new AltRes(e);
                        }
                    }
                }
            }
            if (v instanceof AltRes) {
                uncheckedThrow(((AltRes) v).t);
            }
            return (T) v;
        }

        static class AltRes {
            final Throwable t;

            AltRes(Throwable t) {
                this.t = t;

    }

    @Override
    public MavenSession clone() {
        try {
            MavenSession clone = (MavenSession) super.clone();
            // the default must become the current project of the thread that clones this
            MavenProject current = getCurrentProject();
            // we replace the thread local of the clone to prevent write through and enforce the new default value

    public Optional<Project> getExecutionProject(Project project) {
        // Session keep tracks of the Project per project id,
        // so we cannot use session.getProject(p) for forked projects
        // which are temporary clones
        return Optional.ofNullable(getMavenProject(project).getExecutionProject())
                .map(p -> new DefaultProject(session, p));
    }

    private MavenProject getMavenProject(Project project) {