String location = f.next().location;
            ActivationFrame parent = f.next();

            return parent.parent.map(p -> p.getLocation(location)).orElse(null);
        };
        final UnaryOperator<String> transformer = s -> {
            if (hasProjectExpression(s)) {
                String path = pathSupplier.get();

                .setLocation(Optional.ofNullable(target.getLocation(locationKey))
                        .map(InputLocation::new)
                        .orElse(null))
                .setException(e));
    }

    private static boolean isNotEmpty(String string) {
        return string != null && !string.isEmpty();
    }

    @Override

            String location = f.next().location;
            ActivationFrame parent = f.next();

            return parent.parent.map(p -> p.getLocation(location)).orElse(null);
        };
        final UnaryOperator<String> transformer = s -> {
            if (hasProjectExpression(s)) {
                String path = pathSupplier.get();

                .findFirst()
                .orElse(null);
        assertNotNull(plugin, "Unable to find plugin with artifactId: " + artifactId);
        List<PluginExecution> pluginExecutions = plugin.getExecutions();
        PluginExecution pluginExecution = pluginExecutions.stream()
                .filter(pe -> pe.getId().equals(expectedId))
                .findFirst()
                .orElse(null);

                        .flatMap(r -> r.getProblems().stream())
                        .filter(p -> p.getException() instanceof CycleDetectedException)
                        .findAny()
                        .orElse(null);
                if (cycle != null) {
                    throw new RuntimeException(new ProjectCycleException(
                            "The projects in the reactor contain a cyclic reference: " + cycle.getMessage(),