groups = new ArrayList<>();
                                map.put(mems[ mi ], groups);
                            }
                            if ( !groups.contains(groupSid) )
                                groups.add(groupSid);
                        }
                    }

                    return map;
                }
            }

                }
                if ( tok.getMechanisms() != null ) {
                    Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));
                    if ( !mechs.contains(NtlmContext.NTLMSSP_OID) ) {
                        throw new SmbUnsupportedOperationException("Server does not support NTLM authentication");
                    }
                }
            }
        }

```{ .python .annotate hl_lines="2  10-12  14" }
{!../../docs_src/custom_response/tutorial008.py!}
```

1. This is the generator function. It's a "generator function" because it contains `yield` statements inside.
2. By using a `with` block, we make sure that the file-like object is closed after the generator function is done. So, after it finishes sending the response.

   * @param start the index of the first character to be scanned
   * @param end the index immediately after the last character to be scanned
   * @throws IllegalArgumentException if the scanned sub-sequence of {@code csq} contains invalid
   *     surrogate pairs
   */
  protected int nextEscapeIndex(CharSequence csq, int start, int end) {
    int index = start;
    while (index < end) {
      int cp = codePointAt(csq, index, end);

    return initialPart + penultimate + ":" + ultimate;
  }

  private static byte parseOctet(String ipString, int start, int end) {
    // Note: we already verified that this string contains only hex digits, but the string may still
    // contain non-decimal characters.
    int length = end - start;
    if (length <= 0 || length > 3) {
      throw new NumberFormatException();
    }

// Its valid to have a empty prefix.
func IsValidObjectPrefix(object string) bool {
	if hasBadPathComponent(object) {
		return false
	}
	if !utf8.ValidString(object) {
		return false
	}
	if strings.Contains(object, `//`) {
		return false
	}
	// This is valid for AWS S3 but it will never
	// work with file systems, we will reject here
	// to return object name invalid rather than

			addr := obj.Addr{}
			parser.operand(&addr)
		})

		switch {
		case err == nil:
			t.Errorf("fail at %s: got no errors; expected %s\n", test.input, test.error)
		case !strings.Contains(err.Error(), test.error):
			t.Errorf("fail at %s: got %s; expected %s", test.input, err, test.error)
		}
	}
}

func testOperandParser(t *testing.T, parser *Parser, tests []operandTest) {

	}}

	for i, v := range vectors {
		fi := v.h.FileInfo()
		h2, err := FileInfoHeader(fi, "")
		if err != nil {
			t.Error(err)
			continue
		}
		if strings.Contains(fi.Name(), "/") {
			t.Errorf("FileInfo of %q contains slash: %q", v.h.Name, fi.Name())
		}
		name := path.Base(v.h.Name)
		if fi.IsDir() {
			name += "/"
		}
		if got, want := h2.Name, name; got != want {

			}
		}

		// No need to continue loading if the config is not enabled.
		if !enabled {
			continue
		}

		// Validate that client ID has not been duplicately specified.
		if seenClientIDs.Contains(p.ClientID) {
			return c, config.Errorf("Client ID %s is present with multiple OpenID configurations", p.ClientID)
		}
		seenClientIDs.Add(p.ClientID)

		p.URL, err = xnet.ParseHTTPURL(configURL)
		if err != nil {

		t.Errorf("unexpected crc, compress and uncompressed size to be 0 was: %v", b[14:26])
	}

	binary.LittleEndian.PutUint32(sig[:], uint32(dataDescriptorSignature))
	if bytes.Contains(b, sig[:]) {
		t.Error("there should be no data descriptor")
	}
}

func TestWriterCopy(t *testing.T) {
	// make a zip file
	buf := new(bytes.Buffer)
	w := NewWriter(buf)