docs: function(env, baseConfig) {
      percyConfig = baseConfig.percy || {};
  
      // Store the Ember rootURL to be used later.
      percyConfig.baseUrlPath = baseConfig.rootURL || '/';
  
      // Make sure the percy config has a 'breakpoints' object.
      percyConfig.breakpointsConfig = percyConfig.breakpointsConfig || {};
    }