int getAttributeValue(Element element, String attrName, int defaultValue) {
		String val = element.getAttributeValue(attrName);
		if (val == null) {
			return defaultValue;
		}
		try {
			return Integer.parseInt(val);
		}
		catch (NumberFormatException e) {
			return 0;
		}
	}
Get results entry keyed by "<groupName>.<testName>"
@param groupTestName
@param create
@return
Ghidra/Features/Base/src/main/java/ghidra/test/processors/support/PCodeTestResults.java