private URL findInModuleDirectory(String name) {
		if (moduleDirectory == null) {
			// must be the master loader
			return null;
		}

		// we have a specific module
		ResourceFile helpFile = new ResourceFile(moduleDirectory, name);
		if (helpFile.exists()) {
			try {
				return helpFile.toURL();
			}
			catch (MalformedURLException e) {
				Msg.error(this, "Unexpected exception converting file to URL: " + helpFile, e);
			}
		}
		return null;
	}
Overridden to allow us to search our modules in addition to the normal class search
mechanism.

@param name the name of the help item to load
@return the URL for the given item; null if the item cannot be found
Ghidra/Framework/Docking/src/main/java/docking/help/GHelpClassLoader.java