API/Advanced/Custom-Base-Entity.md

-WIP
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+Sometimes you are trying to apply a model to something that is not an entity, or you want something that is a bit more
+complex than the default `Dummy`. You can wrap your custom target with `BaseEntity` class.
+
+```java
+public class CustomBaseEntity implements BaseEntity<CustomTarget> {
+	
+	@Getter private final CustomTarget original;
+	
+	public CustomBaseEntity(CustomTarget original) {
+		this.original = original;
+    }
+	
+	// Implement the rest of the methods
+	
+}
+```
+
+When it is time to add models to this custom target, we can do something similar to the `Dummy` method.
+
+```java
+CustomBaseEntity baseEntity = new CustomBaseEntity(customTarget);
+ModeledEntity modeledEntity = ModelEngineAPI.createModeledEntity(baseEntity);
+// The rest is exactly the same
+```
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