static String join(Collection<String> coll, String sep) {
		StringBuilder sb = new StringBuilder();
		for (String s : coll) {
			if (sb.length() > 0) {
				sb.append(sep);
			}
			sb.append(s);
		}
		return sb.toString();
	}
@see org.xml.sax.ErrorHandler#error(org.xml.sax.SAXParseException)
Ghidra/Features/Base/src/main/java/ghidra/util/xml/XmlTestHelper.java