code: function(rule) {
  			var offset = rule.valueRange(true).start;
  			var nestedSections = this.findAllRules(rule.valueRange().substring(rule.source));
  			nestedSections.forEach(function(section) {
  				section.start += offset;
  				section.end += offset;
  				section._selectorEnd += offset;
  				section._contentStart += offset;
  			});
  			return nestedSections;
  		}
docs: Returns ranges for all nested sections, available in
  given CSS rule
  @param  {CSSEditContainer} rule
  @return {Array}