@Test
public void testAddPrefixesWithColon() {

	Map<String, String> map = new HashMap<>();
	map.put("pfx:", "uri");
	map.put("pfx2", "uri2");
	handler.addPrefixes(map);
	String[] lst = byLine(query.toString());
	assertContainsRegex(PREFIX+"pfx:"+SPACE+uri("uri"), lst);
	assertContainsRegex(PREFIX+"pfx2:"+SPACE+uri("uri2"), lst);
}