static get(sModuleName) {
			const oModule = mModules[sModuleName] ??= new Module(sModuleName);
			return oModule;
		}
Find or create a module by its unified resource name.

If the module doesn't exist yet, a new one is created in state INITIAL.

@param {string} sModuleName Name of the module in URN syntax
@returns {Module} Module with that name, newly created if it didn't exist yet