@Test
  public void appendVarargsQueryParamsWithExistingQueryStart() {
    assertEquals("http://test.com/1?a=b",
        HttpRequest.append("http://test.com/1?", "a", "b"));
  }
Append with base URL already containing a '?'
lib/src/test/java/com/github/kevinsawicki/http/HttpRequestTest.java