this.elements = elements;
    }

    @SuppressWarnings("unchecked")
    Object readResolve() {
      return new Builder<E>(comparator).add((E[]) elements).build();
    }

    private static final long serialVersionUID = 0;
  }

  @J2ktIncompatible // serialization
  private void readObject(ObjectInputStream unused) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

                return optional.get();
              }
            }
            return endOfData();
          }
        };
      }
    };
  }

  private static final long serialVersionUID = 0;

// Analyze command
func Analyze(ctx cli.Context) *cobra.Command {
	var verbose bool
	analysisCmd := &cobra.Command{
		Use:   "analyze <file>...",
		Short: "Analyze Istio configuration and print validation messages",
		Long: fmt.Sprintf("Analyze Istio configuration and print validation messages.\n"+
			"For more information about message codes, refer to:\n%s", url.ConfigAnalysis),
		Example: `  # Analyze the current live cluster
  istioctl analyze

			defer cancel()

			refreshed, err := c.Refresh(ctx, args)
			if err != nil {
				ch <- refreshResult{offline: true}
				log("dsync: Unable to call Refresh failed with %s for %#v at %s\n", err, args, c)
			} else {
				ch <- refreshResult{refreshed: refreshed}
				log("dsync: Refresh returned false for %#v at %s\n", args, c)
			}
		}(index, c)
	}

	// Wait until we have either
	//

	{"abc", []byte("ABC")},
	{"AbC123", []byte("ABC123")},
	{"azAZ09_", []byte("AZAZ09_")},
	{"longStrinGwitHmixofsmaLLandcAps", []byte("LONGSTRINGWITHMIXOFSMALLANDCAPS")},
	{"long\u0250string\u0250with\u0250nonascii\u2C6Fchars", []byte("LONG\u2C6FSTRING\u2C6FWITH\u2C6FNONASCII\u2C6FCHARS")},
	{"\u0250\u0250\u0250\u0250\u0250", []byte("\u2C6F\u2C6F\u2C6F\u2C6F\u2C6F")}, // grows one byte per char

 * sure that these (potentially overridden) methods are invoked only once, and instance created by those methods are
 * memorized and kept as long as supplier instance is kept open.
 * <p>
 * This class is not thread safe and must be used from one thread only, while the constructed {@link RepositorySystem}
 * is thread safe.
 * <p>

                "raw-model/profile-activation-file-with-allowed-expressions.xml",
                mbr -> mbr.setUserProperties(new Properties() {
                    private static final long serialVersionUID = 1L;

                    {
                        setProperty("foo", "foo");
                        setProperty("bar", "foo");
                    }
                }));

      Comparator<? super K> comparator,
      boolean sameComparator,
      Iterable<? extends Entry<? extends K, ? extends V>> entries) {
    // "adding" type params to an array of a raw type should be safe as
    // long as no one can ever cast that same array instance back to a
    // raw type.
    @SuppressWarnings("unchecked")
    Entry<K, V>[] entryArray = (Entry[]) Iterables.toArray(entries, EMPTY_ENTRY_ARRAY);

            .add("field33", new byte[0])
            .add("field34", new char[0])
            .add("field35", new short[0])
            .add("field36", new int[0])
            .add("field37", new long[0])
            .add("field38", new float[0])
            .add("field39", new double[0])
            .add("field40", new Object[0])
            .toString();

We are going to start from where we left in the previous chapter and increment it.

## About JWT

JWT means "JSON Web Tokens".

It's a standard to codify a JSON object in a long dense string without spaces. It looks like this:

```
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
```