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When a class exposes multiple constructors, they're generally used as a means of
initializing default parameters. If a chaining constructor ignores a parameter,
it's likely the parameter needed to be plumbed to the chained constructor.
```java
MissileLauncher(Location target) {
this(target, false);
}
MissileLauncher(boolean askForConfirmation) {
this(TEST_TARGET, false); // should be askForConfirmation
}
MissileLauncher(Location target, boolean askForConfirmation) {
...
}
```
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