fix: value object must have equals defined on their data

Author: AndreaGiulianelli

src/env/entity/room/RoomID.java

@@ -8,6 +8,8 @@
 
 package entity.room;
 
+import java.util.Objects;
+
 /**
  * Room identifier.
  */
@@ -29,4 +31,21 @@ public RoomID(final String id) {
     public String getId() {
         return this.id;
     }
+
+    @Override
+    public final boolean equals(final Object other) {
+        if (this == other) {
+            return true;
+        }
+        if (other == null || this.getClass() != other.getClass()) {
+            return false;
+        }
+        final RoomID that = (RoomID) other;
+        return this.getId().equals(that.getId());
+    }
+
+    @Override
+    public final int hashCode() {
+        return Objects.hash(this.getId());
+    }
 }