Extending interface
interface FlyingHero extends Hero
{
void fly();
}
interface RoboticHero extends Hero
{
void fight(Weapon w);
void swim() throws RustException;
}
interface SortedSet extends NumericSet
{
boolean isSorted();
void sort();
Number first();
Number last();
}
interface DoubleClickable extends Clickable
{
void doubleClicked();
}
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