public static PackageMetadataStore getInstance() {
        return packageMetadataStore;
    }
@Test
    public void shouldPopulateDataCorrectly() throws Exception {
        PackageConfigurations packageConfigurations = new PackageConfigurations();
        PackageMetadataStore.getInstance().addMetadataFor("plugin-id", packageConfigurations);

        assertThat(PackageMetadataStore.getInstance().getMetadata("plugin-id"), is(packageConfigurations));
    }