code: function argvPlugin(dynamicConfig, options) {
      var self = this;
      var separator;
      var whitelist;
  
      if (options && typeof options === "object") {
          separator = options.separator;
          whitelist = options.whitelist;
      }
  
      this(dynamicConfig).after("loadConfigFile", function (result) {
          self.override.result = merge(result, minimist(process.argv.slice(2)), separator, whitelist);
      });
  }
docs: Merge arguments from argv into config.
  
  @param {Function} dynamicConfig
  @param {Object} [options]
  @param {string} [options.separator=":"]
  @param {Array} [options.whitelist=[]]
  @this pluginContext