private void populateProcessorsMap(final Map<String, ResourcePreProcessor> map) {
map.put(CssUrlRewritingProcessor.ALIAS, new CssUrlRewritingProcessor());
map.put(CssImportPreProcessor.ALIAS, new CssImportPreProcessor());
map.put(LessCssImportPreProcessor.ALIAS, new LessCssImportPreProcessor());
map.put(CssVariablesProcessor.ALIAS, new CssVariablesProcessor());
map.put(CssCompressorProcessor.ALIAS, new CssCompressorProcessor());
map.put(SemicolonAppenderPreProcessor.ALIAS, new SemicolonAppenderPreProcessor());
map.put(CssDataUriPreProcessor.ALIAS, new CssDataUriPreProcessor());
map.put(FallbackCssDataUriProcessor.ALIAS, new FallbackCssDataUriProcessor());
map.put(DuplicatesAwareCssDataUriPreProcessor.ALIAS_DUPLICATE, new DuplicatesAwareCssDataUriPreProcessor());
map.put(JawrCssMinifierProcessor.ALIAS, new JawrCssMinifierProcessor());