### Question:
GenericCoveragePlugin extends SonarPlugin { @Override public List getExtensions() { ImmutableList.Builder<Object> builder = ImmutableList.builder(); builder.add(GenericCoverageSensor.class); builder.addAll(pluginProperties()); return builder.build(); }  @Override List getExtensions(); static final String OLD_REPORT_PATH_PROPERTY_KEY; static final String COVERAGE_REPORT_PATHS_PROPERTY_KEY; static final String IT_COVERAGE_REPORT_PATHS_PROPERTY_KEY; static final String OVERALL_COVERAGE_REPORT_PATHS_PROPERTY_KEY; static final String UNIT_TEST_REPORT_PATHS_PROPERTY_KEY; }### Answer:
@Test public void extensions() throws Exception { assertThat(new GenericCoveragePlugin().getExtensions()).hasSize(6); }