void printf(String format, Object... args) {
			if (stringWriter.getBuffer().length() > 0) {
				printWriter.write(SEPERATOR);
			}
			printWriter.printf(format, args);
		}
Since the JavaCompiler tasks can close the class loader returned by this method, make 
sure we're returning a copy.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/osgi/GhidraSourceBundle.java