be able to skip automatic closing of a hash resource

src/main/java/net/openhft/chronicle/map/ChronicleMapBuilder.java

@@ -181,6 +181,7 @@ public final class ChronicleMapBuilder<K, V> implements
     MapEntryOperations<K, V, ?> entryOperations = mapEntryOperations();
     MapRemoteOperations<K, V, ?> remoteOperations = mapRemoteOperations();
     Runnable preShutdownAction;
+    boolean skipCloseOnExitHook = false;
     private String name;
     // not final because of cloning
     private ChronicleMapBuilderPrivateAPI<K, V> privateAPI =
@@ -1607,6 +1608,12 @@ public final class ChronicleMapBuilder<K, V> implements
         return this;
     }
 
+    @Override
+    public ChronicleMapBuilder<K, V> skipCloseOnExitHook(boolean skipCloseOnExitHook) {
+        this.skipCloseOnExitHook = skipCloseOnExitHook;
+        return this;
+    }
+
     @Override
     public ChronicleMap<K, V> create() {
         // clone() to make this builder instance thread-safe, because createWithoutFile() method