anchor.diff:    });
   }
   
  -List<String> _getLibraryPaths(String packageDir, String libName, String libVersion) {
  +List<String> _getLibraryPaths(String rootDir, String libName, String libVersion) {
     final name = '${libName}_${libVersion}_api';
     final libDir = 'dart_${name}_client/lib';
   
  
positive.code: 
    return Process.run('dart', theArgs);
  }
  
negative.code:         expect(success, isTrue);
  
          return _validateDirectory(tmpDir.path, _testLibName, _testLibVer);
        })
        .then((_) => _analyzePackage(tmpDir.path, _testLibName, _testLibVer));
  }
  
  Future _testSingleLibraryGenerationViaCLI(TempDir tmpDir) {
  