code: function PlatformInfo(PlatformCtor, platformId) {
  
      this._Ctor = PlatformCtor;
      this._platformId = platformId;
  
      // Prefix all platform-specific args with the platform name
      var argSpec = PlatformCtor.getArgs ? PlatformCtor.getArgs() : {};
      this._argSpec = {};
      for (var cmd in argSpec) {
          var cmdArgSpec = argSpec[cmd];
          var platformCmdArgSpec = {};
          for (var key in cmdArgSpec) {
              platformCmdArgSpec["--" + platformId + "-" + key] = cmdArgSpec[key];
          }
          this._argSpec[cmd] = platformCmdArgSpec;
      }
  
      // Look for platforms env vars
      this._envSpec = PlatformCtor.getEnv ? PlatformCtor.getEnv() : {};
  }
docs: Encapsulates static backend information, does not depend on an instance.
  @param {Function} PlatformCtor Constructor function for the platform
  @param {String} platformId Name for the platform, "android", "ios", ...
  @constructor