### Question:
ToolSpec { public String getParameterDefault(String name) { Element el = getElementById(name); if (LOG.isLoggable(Level.FINE)) { LOG.fine("Element with id " + name + " is " + el); } if (el != null) { if (LOG.isLoggable(Level.FINE)) { LOG.fine("local name is " + el.getLocalName()); } if ("argument".equals(el.getLocalName())) { if (el.hasAttribute("default")) { return el.getAttribute("default"); } } else if ("option".equals(el.getLocalName())) { List<Element> elemList = DOMUtils.findAllElementsByTagNameNS(el, "http: "associatedArgument"); if (!elemList.isEmpty()) { Element assArg = elemList.get(0); if (assArg.hasAttribute("default")) { return assArg.getAttribute("default"); } } } } return null; } ToolSpec();  ToolSpec(InputStream in);  ToolSpec(InputStream in, boolean validate);  ToolSpec(Document d); ExtendedDocumentBuilder getDocumentBuilder(); boolean isValidInputStream(String id); Element getElementById(String id); boolean hasHandler(); Tool getHandler(); Tool getHandler(ClassLoader loader); Element getStreams(); List<String> getInstreamIds(); List<String> getOutstreamIds(); Element getUsage(); void transform(InputStream stylesheet, OutputStream out); Element getPipeline(); List<Element> getUsageForms(); String getStreamRefName(String streamId); String getParameterDefault(String name); String getAnnotation();  }### Answer:
@Test public void testGetParameterDefault() throws Exception { String tsSource = "parser/resources/testtool.xml"; toolSpec = new ToolSpec(getClass().getResourceAsStream(tsSource), false); assertNull(toolSpec.getAnnotation()); assertNull(toolSpec.getParameterDefault("namespace")); assertNull(toolSpec.getParameterDefault("wsdlurl")); }