docs: function(e){
      var images  = this.images;
      var baseDir = path.dirname(this.get('file'));
      var files   = {};
      var equals = {};
  
      forEach(images, function(file, id){
        var fullPath = path.resolve(baseDir, file);
        if (files[fullPath] !== undefined) {
          equals[id] = files[fullPath];
        } else {
          //去除重复
          files[fullPath] = id;
        }
      });
  
      this.equals = equals;
  
      files = Object.keys(files);
      files.forEach(function(file){
        var fs = require('fs');
        var exists    = fs.existsSync;
        if (!exists(file)){
          Log.error('图片' + path.relative(baseDir, file) + '不存在');
        }
      });
  
      //获取图片大小
      Api.getImagesSize(files, this._setDef, this);
    }