anchor.diff:    final String fullName;
   
     SdkSource(this._sdk, this.uri, this.fullName) {
  -    print("= SdkSource: uri=${uri}, path=${fullName}");
  +    _DebugLogger.instance.debug("= SdkSource: uri='${uri}', path='${fullName}'");
     }
   
     @override
  
positive.code: 
    @override
    Source resolveAbsolute(Uri uri) {
      print("> FileUriResolver.resolveAbsolute(${uri})");
      Source result;
      if (!isFileUri(uri)) {
        result = null;
      } else {
        result = context.getSource(uri.path);
      }
      print("< FileUriResolver.resolveAbsolute(${uri}): ${result == null ? 'null' : result.uri}");
      return result;
    }
  }
  
negative.code:   }
  }
  
  /**
   * A wrapper around an analysis context. There is a one-to-one mapping between
   * projects, on the DOM side, and analysis contexts.
  