whole_func_string: function normalizeWindowConfig(windowConfig) {
      if (!windowConfig) {
          return;
      }
  
      let result = {};
      // filter the illegal not supported config item
      // and map the weixin config name to quick app
      Object.keys(windowConfig).forEach(k => {
          let newKey = DISPLAY_PAGE_CONFIG_MAP[k];
          if (newKey) {
              result[newKey] = windowConfig[k];
          }
      });
      return result;
  }
func_code_string: function normalizeWindowConfig(windowConfig) {
      if (!windowConfig) {
          return;
      }
  
      let result = {};
      // filter the illegal not supported config item
      // and map the weixin config name to quick app
      Object.keys(windowConfig).forEach(k => {
          let newKey = DISPLAY_PAGE_CONFIG_MAP[k];
          if (newKey) {
              result[newKey] = windowConfig[k];
          }
      });
      return result;
  }
func_documentation_string: Normalize window config, convert it as quick app display config
  
  @inner
  @param {?Object} windowConfig the window config
  @return {?Object}