Dispatch with different type inferrer (#1868)

plugins/org.yakindu.base.types/src/org/yakindu/base/types/inferrer/AbstractTypeSystemInferrer.java

@@ -13,6 +13,7 @@ package org.yakindu.base.types.inferrer;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.List;
 
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.xtext.util.PolymorphicDispatcher;
@@ -115,8 +116,8 @@ public abstract class AbstractTypeSystemInferrer implements ITypeSystemInferrer
 		});
 	}
 
-	protected void initDispatcher() {
-		dispatcher = new PolymorphicDispatcher<Object>(METHOD_NAME, 1, 1, Collections.singletonList(this),
+	public void initDispatcher(List<ITypeSystemInferrer> targets) {
+		dispatcher = new PolymorphicDispatcher<Object>(METHOD_NAME, 1, 1, targets,
 				new PolymorphicDispatcher.ErrorHandler<Object>() {
 					@Override
 					public Object handle(Object[] params, Throwable throwable) {
@@ -130,6 +131,10 @@ public abstract class AbstractTypeSystemInferrer implements ITypeSystemInferrer
 				});
 	}
 
+	protected void initDispatcher() {
+		initDispatcher(Collections.singletonList(this));
+	}
+
 	protected void assertNotType(InferenceResult currentResult, String msg, InferenceResult... candidates) {
 		typeValidator.assertNotType(currentResult, msg, acceptor, candidates);
 	}