code: function _updateCommandAndKeyMaps(newBinding) {
          if (_allCommands.length === 0) {
              return;
          }
  
          if (newBinding && newBinding.commandID && _allCommands.indexOf(newBinding.commandID) === -1) {
              _defaultKeyMap[newBinding.commandID] = _.cloneDeep(newBinding);
  
              // Process user key map again to catch any reassignment to all new key bindings added from extensions.
              _loadUserKeyMap();
          }
      }
docs: @private
  
  Updates _allCommands array and _defaultKeyMap with the new key binding
  if it is not yet in the _allCommands array. _allCommands array is initialized
  only in extensionsLoaded event. So any new commands or key bindings added after
  that will be updated here.
  
  @param {{commandID: string, key: string, displayKey:string, explicitPlatform: string}} newBinding