register(...plugins) {
		plugins.forEach((plugin) => {
			if (typeof plugin !== 'object' || !plugin.name || !plugin.init) {
				throw new Error('Invalid JSEP plugin format');
			}
			if (this.registered[plugin.name]) {
				// already registered. Ignore.
				return;
			}
			plugin.init(this.jsep);
			this.registered[plugin.name] = plugin;
		});
	}
Adds the given plugin(s) to the registry

@param {object} plugins
@param {string} plugins.name The name of the plugin
@param {PluginSetup} plugins.init The init function
@public