Use ? super in Consumer/Predicate API (#9939)

patches/api/0378-Add-a-consumer-parameter-to-ProjectileSource-launchP.patch

@@ -5,15 +5,15 @@ Subject: [PATCH] Add a consumer parameter to ProjectileSource#launchProjectile
 
 
 diff --git a/src/main/java/org/bukkit/projectiles/ProjectileSource.java b/src/main/java/org/bukkit/projectiles/ProjectileSource.java
-index eabd8b926ec1c934cd7e77b7cc6adfae16771021..5a2dcb1dbd0a875ff9cf5fd01445196a947f2fdc 100644
+index eabd8b926ec1c934cd7e77b7cc6adfae16771021..96ebd30d339060758e726e9e1e7428d1d0813c17 100644
 --- a/src/main/java/org/bukkit/projectiles/ProjectileSource.java
 +++ b/src/main/java/org/bukkit/projectiles/ProjectileSource.java
-@@ -31,4 +31,24 @@ public interface ProjectileSource {
+@@ -31,4 +31,23 @@ public interface ProjectileSource {
       */
      @NotNull
      public <T extends Projectile> T launchProjectile(@NotNull Class<? extends T> projectile, @Nullable Vector velocity);
 +    
-+    // Paper start
++    // Paper start - add consumer to launchProjectile
 +    /**
 +     * Launches a {@link Projectile} from the ProjectileSource with an
 +     * initial velocity, with the supplied function run before the
@@ -29,7 +29,6 @@ index eabd8b926ec1c934cd7e77b7cc6adfae16771021..5a2dcb1dbd0a875ff9cf5fd01445196a
 +     * @param function the function to be run before the entity is spawned
 +     * @return the launched projectile
 +     */
-+    @NotNull
-+    public <T extends Projectile> T launchProjectile(@NotNull Class<? extends T> projectile, @Nullable Vector velocity, @Nullable java.util.function.Consumer<T> function);
-+    // Paper end
++    <T extends Projectile> @NotNull T launchProjectile(@NotNull Class<? extends T> projectile, @Nullable Vector velocity, java.util.function.@Nullable Consumer<? super T> function);
++    // Paper end - add consumer to launchProjectile
  }