Registering file assosiations

This code is to be placed in install() method of the logic. It will register ".css" extension with text/css mime type and will assosiate program, returned by getExecutable() as the non-default viewer and will add this program to the "open-with" list in the right-click menu:

    if (SystemUtils.isWindows()) {
            WindowsNativeUtils utils = (WindowsNativeUtils) SystemUtils.getNativeUtils();
            SystemApplication app = new SystemApplication(new File(installLocation, getExecutable()));
            app.setFriendlyName(getSystemDisplayName());
            app.setOpenWithList(true);
            app.setByDefault(false);
            FileExtension ext = new FileExtension("css");
            ext.setPerceivedType(PerceivedType.TEXT);
            ext.setMimeType("text/css");

            try {
                    utils.setFileAssociation(ext, app, getProduct().getProperties());  
                }                
            } catch (NativeException e) {
                LogManager.log(e);
            }
        }

if (SystemUtils.isWindows()) {
            WindowsNativeUtils utils = (WindowsNativeUtils) SystemUtils.getNativeUtils();
            SystemApplication app = new SystemApplication(new File(installLocation, getExecutable()));
            app.setFriendlyName(getSystemDisplayName());
            app.setOpenWithList(true);
            app.setByDefault(false);
            FileExtension ext = new FileExtension("css");
            ext.setPerceivedType(PerceivedType.TEXT);
            ext.setMimeType("text/css");

            try {
                    utils.removeFileAssociation(ext, app, getProduct().getProperties());  
                }                
            } catch (NativeException e) {
                LogManager.log(e);
            }
        }