SpacesAPIImpl implements SpacesAPI { public URI resolveFileSystemURI(Scheme scheme, Space space, String fsName) { URI uri = URI.create(SpacesAPI.resolveFileSystemPath(scheme, space, fsName)); return uri; }  @Override Space getSpace(String name); @Override Optional<Space> resolveSpace(String uri); URI resolveFileSystemURI(Scheme scheme,
                                    Space space,
                                    String fsName);  }
@Test public void resolveFileSystemURITest() { assertEquals("default: spaces.resolveFileSystemURI(SpacesAPI.Scheme.DEFAULT, SpacesAPI.DEFAULT_SPACE, "system").toString()); }