public static boolean exists(String packageName) {
		if (packageMap == null) {
			packageMap = createPackageMap();
		}
		PluginPackage pluginPackage = packageMap.get(packageName.toLowerCase());
		return pluginPackage != null;
	}
Returns true if the system has found a plugin package for the given name
@param packageName the package name
@return true if the system has found a plugin package for the given name
Ghidra/Framework/Project/src/main/java/ghidra/framework/plugintool/util/PluginPackage.java