code: function(destPath) {
      this.checkDestDir(destPath);
      var exists = existsSync(destPath);
      // we warn if
      // if (exists) {
      //   this.ui.writeLine('The destination path: ' + destPath + ' already exists. Cannot overrwrite.', 'WARNING');
      // }
  
      return {
        destExists: exists,
        destDir: this.createDestDir
      };
    }
docs: determine if the file already exists and will be overwritten