code: function(searchPaths, sourceFoundCallback) {
      	this.sourceFoundCallback = sourceFoundCallback;
          if(searchPaths) {
              searchPaths = Array.isArray(searchPaths) ? searchPaths : [searchPaths];
              // For windows, convert to forward slashes
              this.searchPaths = searchPaths.map(path.normalize);
          }
          else {
              this.searchPaths = ['.'];
          }
      }
docs: Based off of the Nunjucks 'FileSystemLoader'