public static URL getResource(String filename) {
		URL url = classLoader.getResource(filename);
		if (url != null) {
			return url;
		}

		url = getResource(getTestSearchPaths(), filename);
		return url;
	}
Finds a resource with a given name. This method returns null if no
resource with this name is found. The rules for searching resources
associated with a given class are implemented by the defining class
loader of the class.

@param filename "partially" qualified resource filename to get, e.g.,
       "images/go-home.png" would look for the file named 'home.gif' in
       the 'images' subdirectory of the 'resources' package,
       following the search rules defined by your CLASSPATH and
       return an InputStream if found; null if it cannot load the resource.
@return the URL
Ghidra/Framework/Gui/src/main/java/resources/ResourceManager.java