final Converter<String> geohashConv = new GeohashConv();
long geocell = GeocellLibrary.getGeocell(57.64911, 10.40744, 50);
assertEquals(geohashConv.toGeocell("u4pruydqqv"), geocell);
// Trot around San Francisco using geohashes.
geocell = geohashConv.toGeocell("9q8yyj");
assertEquals("9q8yyj", geohashConv.fromGeocell(geocell));
geocell = GeocellLibrary.getEast(geocell);
assertEquals("9q8yym", geohashConv.fromGeocell(geocell));
geocell = GeocellLibrary.getEast(geocell);
assertEquals("9q8yyt", geohashConv.fromGeocell(geocell));