src/main/java/wycc/util/StdModuleManager.java
public <T extends Module> T getInstance(Class<T> module) {
		return (T) instances.get(module);
	}
public <T extends Module> T getInstance(Class<T> module) {
		return (T) instances.get(module);
	}
Get instance of given module within this context, or null if no
instance available.

@param module
@return