public List<File> load(String artifact)
      throws RepositoryException {
    return load(artifact, new LinkedList<>());
  }
@Test
  void should_throw_exception_if_dependency_not_found() throws Exception {
    FileNotFoundException exception = assertThrows(FileNotFoundException.class, () -> {
      resolver.load("one.two:1.0", testCopyPath);
    });
    assertEquals("File system element for parameter 'source' does not exist: 'one.two:1.0'",
        exception.getMessage());
  }