begin work

src/main/java/com/glodblock/github/util/SetBackedMachineSet.java

@@ -0,0 +1,60 @@
+package com.glodblock.github.util;
+
+import appeng.api.networking.IGridHost;
+import appeng.api.networking.IGridNode;
+import appeng.api.networking.IMachineSet;
+
+import javax.annotation.Nonnull;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.Spliterator;
+import java.util.function.Consumer;
+
+public class SetBackedMachineSet implements IMachineSet {
+
+    private final Class<? extends IGridHost> machineClass;
+    private final Set<IGridNode> backingSet;
+
+    public SetBackedMachineSet(Class<? extends IGridHost> machineClass, Set<IGridNode> backingSet) {
+        this.machineClass = machineClass;
+        this.backingSet = backingSet;
+    }
+
+    @Nonnull
+    @Override
+    public Class<? extends IGridHost> getMachineClass() {
+        return machineClass;
+    }
+
+    @Override
+    public int size() {
+        return backingSet.size();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingSet.isEmpty();
+    }
+
+    @Override
+    public boolean contains(Object o) {
+        //noinspection SuspiciousMethodCalls
+        return backingSet.contains(o);
+    }
+
+    @Override
+    public Iterator<IGridNode> iterator() {
+        return backingSet.iterator();
+    }
+
+    @Override
+    public void forEach(Consumer<? super IGridNode> action) {
+        backingSet.forEach(action);
+    }
+
+    @Override
+    public Spliterator<IGridNode> spliterator() {
+        return backingSet.spliterator();
+    }
+
+}