### Question:
MapReduceActionBuilder extends NodeBuilderBaseImpl<MapReduceActionBuilder> implements Builder<MapReduceAction> { public MapReduceActionBuilder clearJobXmls() { attributesBuilder.clearJobXmls(); return this; } MapReduceActionBuilder(final Node action,
                           final ActionAttributesBuilder attributesBuilder); static MapReduceActionBuilder create(); static MapReduceActionBuilder createFromExistingAction(final Node action); MapReduceActionBuilder withResourceManager(final String resourceManager); MapReduceActionBuilder withNameNode(final String nameNode); MapReduceActionBuilder withPrepare(final Prepare prepare); MapReduceActionBuilder withStreaming(final Streaming streaming); MapReduceActionBuilder withPipes(final Pipes pipes); MapReduceActionBuilder withJobXml(final String jobXml); MapReduceActionBuilder withoutJobXml(final String jobXml); MapReduceActionBuilder clearJobXmls(); MapReduceActionBuilder withConfigProperty(final String key, final String value); MapReduceActionBuilder withConfigClass(final String configClass); MapReduceActionBuilder withFile(final String file); MapReduceActionBuilder withoutFile(final String file); MapReduceActionBuilder clearFiles(); MapReduceActionBuilder withArchive(final String archive); MapReduceActionBuilder withoutArchive(final String archive); MapReduceActionBuilder clearArchives(); @Override MapReduceAction build();  }### Answer:
@Test public void testClearJobXmls() { final MapReduceActionBuilder builder = getBuilderInstance(); for (final String jobXml : JOB_XMLS) { builder.withJobXml(jobXml); } builder.clearJobXmls(); final MapReduceAction mrAction = builder.build(); final List<String> jobXmlsList = mrAction.getJobXmls(); assertEquals(0, jobXmlsList.size()); }