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

        assertThat(RepositoryMetadataStore.getInstance().getMetadata("plugin-id"), is(repositoryConfigurationPut));
    }