Removed several unchecked casts.

src/main/java/appeng/me/cluster/IAECluster.java

@@ -47,5 +47,5 @@ public interface IAECluster {
      */
     boolean isDestroyed();
 
-    Iterator<IGridHost> getTiles();
+    Iterator<? extends IGridHost> getTiles();
 }

src/main/java/appeng/me/cluster/implementations/CraftingCPUCalculator.java

@@ -90,7 +90,7 @@ public class CraftingCPUCalculator extends MBCalculator<CraftingTileEntity, Craf
 
         c.done();
 
-        final Iterator<IGridHost> i = c.getTiles();
+        final Iterator<CraftingTileEntity> i = c.getTiles();
         while (i.hasNext()) {
             final IGridHost gh = i.next();
             final IGridNode n = gh.getGridNode(AEPartLocation.INTERNAL);

src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java

@@ -185,8 +185,8 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU {
     }
 
     @Override
-    public Iterator<IGridHost> getTiles() {
-        return (Iterator) this.tiles.iterator();
+    public Iterator<CraftingTileEntity> getTiles() {
+        return this.tiles.iterator();
     }
 
     void addTile(final CraftingTileEntity te) {

src/main/java/appeng/me/cluster/implementations/QuantumCluster.java

@@ -33,7 +33,6 @@ import appeng.api.events.LocatableEventAnnounce;
 import appeng.api.events.LocatableEventAnnounce.LocatableEvent;
 import appeng.api.exceptions.FailedConnectionException;
 import appeng.api.features.ILocatable;
-import appeng.api.networking.IGridHost;
 import appeng.api.networking.IGridNode;
 import appeng.api.util.AEPartLocation;
 import appeng.core.AELog;
@@ -238,7 +237,7 @@ public class QuantumCluster implements ILocatable, IAECluster {
     }
 
     @Override
-    public Iterator<IGridHost> getTiles() {
+    public Iterator<QuantumBridgeTileEntity> getTiles() {
         return new ChainedIterator<>(this.getRing()[0], this.getRing()[1], this.getRing()[2], this.getRing()[3],
                 this.getRing()[4], this.getRing()[5], this.getRing()[6], this.getRing()[7], this.center);
     }

src/main/java/appeng/me/cluster/implementations/SpatialPylonCluster.java

@@ -25,7 +25,6 @@ import java.util.List;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 
-import appeng.api.networking.IGridHost;
 import appeng.me.cluster.IAECluster;
 import appeng.me.cluster.MBCalculator;
 import appeng.tile.spatial.SpatialPylonTileEntity;
@@ -88,8 +87,8 @@ public class SpatialPylonCluster implements IAECluster {
     }
 
     @Override
-    public Iterator<IGridHost> getTiles() {
-        return (Iterator) this.getLine().iterator();
+    public Iterator<SpatialPylonTileEntity> getTiles() {
+        return this.getLine().iterator();
     }
 
     public int tileCount() {

src/main/java/appeng/me/helpers/AENetworkProxyMultiblock.java

@@ -41,11 +41,10 @@ public class AENetworkProxyMultiblock extends AENetworkProxy implements IGridMul
         if (this.getCluster() == null) {
             return new ChainedIterator<>();
         }
-
         return new ProxyNodeIterator(this.getCluster().getTiles());
     }
 
     private IAECluster getCluster() {
-        return ((IAEMultiBlock) this.getMachine()).getCluster();
+        return ((IAEMultiBlock<?>) this.getMachine()).getCluster();
     }
 }