code: function extractStyleUrls(resolver, baseUrl, cssText) {
  	      var foundUrls = [];
  	      var modifiedCssText = cssText.replace(_cssImportRe, function () {
  	          var m = [];
  	          for (var _i = 0; _i < arguments.length; _i++) {
  	              m[_i - 0] = arguments[_i];
  	          }
  	          var url = m[1] || m[2];
  	          if (!isStyleUrlResolvable(url)) {
  	              // Do not attempt to resolve non-package absolute URLs with URI scheme
  	              return m[0];
  	          }
  	          foundUrls.push(resolver.resolve(baseUrl, url));
  	          return '';
  	      });
  	      return new StyleWithImports(modifiedCssText, foundUrls);
  	  }
docs: Rewrites stylesheets by resolving and removing the @import urls that
  are either relative or don't have a `package:` scheme