How to use the @ckeditor/ckeditor5-dev-utils.getPostCssConfig function in @ckeditor/ckeditor5-dev-utils

module: {
			rules: [
				{
					// test: **/ckeditor5-*/theme/icons/*.svg
					test: /ckeditor5-[^/\\]+[/\\]theme[/\\]icons[/\\][^/\\]+\.svg$/,
					use: [ 'raw-loader' ]
				},
				{
					// test: **/ckeditor5-*/theme/**/*.css
					test: /\.css$/,
					use: [
						'style-loader',
						{
							loader: 'postcss-loader',
							options: getPostCssConfig( {
								themeImporter: {
									themePath: options.themePath
								},
								minify: true
							} )
						},
					]
				},
				{
					test: /\.(txt|html|rtf)$/,
					use: [ 'raw-loader' ]
				},
				{
					test: /\.js$/,
					loader: require.resolve( '../ck-debug-loader' ),
					query: {

module: {
			rules: [
				{
					test: /\.svg$/,
					use: [ 'raw-loader' ]
				},
				{
					test: /\.css$/,
					use: [
						{
							loader: 'style-loader'
						},
						{
							loader: 'postcss-loader',
							options: getPostCssConfig( {
								themeImporter: {
									themePath: options.themePath
								},
								sourceMap: true
							} )
						},
					]
				},
				{
					test: /\.(txt|html)$/,
					use: [ 'raw-loader' ]
				},
				{
					test: /\.js$/,
					loader: require.resolve( '../ck-debug-loader' ),
					query: {