Add custom access controller example

(merge main -> ce/main 115849)

[git-p4: depot-paths = "//dev/coherence-ce/main/": change = 115850]

Author: thegridman

prj/coherence-bedrock/coherence-bedrock/src/main/java/com/oracle/bedrock/runtime/coherence/options/MemberName.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2022, Oracle and/or its affiliates.
+ * Copyright (c) 2000, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -16,6 +16,7 @@
 import com.oracle.bedrock.runtime.coherence.CoherenceClusterMember;
 import com.oracle.bedrock.runtime.java.options.SystemProperties;
 import com.oracle.bedrock.runtime.java.options.SystemProperty;
+import com.oracle.bedrock.runtime.options.Discriminator;
 
 import java.util.UUID;
 
@@ -38,13 +39,19 @@ public class MemberName
      */
     private final String name;
 
+    /**
+     * A flag to indicate that the {@link Discriminator}
+     * should be used to make the member name unique.
+     */
+    private final boolean useDiscriminator;
 
     /**
      * Constructs a {@link MemberName} for the specified name.
      *
-     * @param name the name
+     * @param name              the name
+     * @param useDiscriminator  {@code true} to use the {@link Discriminator} option to make the name unique
      */
-    private MemberName(String name)
+    private MemberName(String name, boolean useDiscriminator)
         {
         if (name == null)
             {
@@ -54,6 +61,7 @@ private MemberName(String name)
             {
             this.name = name;
             }
+        this.useDiscriminator = useDiscriminator;
         }
 
 
@@ -76,7 +84,19 @@ public String get()
      */
     public static MemberName of(String name)
         {
-        return new MemberName(name);
+        return new MemberName(name, false);
+        }
+
+
+    /**
+     * Obtains a {@link MemberName} for a specified name.
+     *
+     * @param name the name of the {@link MemberName}
+     * @return a {@link MemberName} for the specified name
+     */
+    public static MemberName withDiscriminator(String name)
+        {
+        return new MemberName(name, true);
         }
 
 
@@ -87,14 +107,23 @@ public void onLaunching(
             OptionsByType optionsByType)
         {
         SystemProperties systemProperties = optionsByType.get(SystemProperties.class);
+        String memberName = name;
+
+        if (useDiscriminator)
+            {
+            Discriminator discriminator = optionsByType.get(Discriminator.class);
+            if (discriminator != null)
+                {
+                memberName = memberName + "-" + discriminator.getValue();
+                }
+            }
 
         if (systemProperties != null)
             {
-            optionsByType.add(SystemProperty.of(PROPERTY, name));
+            optionsByType.add(SystemProperty.of(PROPERTY, memberName));
             }
         }
 
-
     @Override
     public void onLaunched(
             Platform platform,

prj/coherence-core/src/main/java/com/tangosol/net/Coherence.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates.
+ * Copyright (c) 2000, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -1500,7 +1500,7 @@ else if (Pattern.matches("[0-9]*", sArg))
             coherence = Coherence.builder(CoherenceConfiguration.create(), mode).build();
             }
 
-        coherence.start();
+        coherence.start().join();
 
         // block forever (or until the Coherence instance is shutdown)
         coherence.whenClosed().join();