ST6RI-856 Revised impl of time-varying end usages being constant.

- Moved it from additional override UsageImpl to "transform" in
UsageAdapter.

Author: seidewitz

org.omg.sysml/src/org/omg/sysml/adapter/UsageAdapter.java

@@ -206,8 +206,14 @@ protected void computeValueConnector() {
 	@Override
 	public void doTransform() {
 		super.doTransform();
-		if (UsageUtil.isVariant(getTarget())) {
+		Usage target = getTarget();
+		if (UsageUtil.isVariant(target)) {
 			addImplicitFeaturingTypesIfNecessary();
 		}
+		
+		// Note: This cannot be done in postProcess, because of mayTimeVary computation.
+		if (target.isEnd() && mayTimeVary()) {
+			target.setIsConstant(true);
+		}
 	}
 }

org.omg.sysml/syntax-gen/org/omg/sysml/lang/sysml/impl/UsageImpl.java

@@ -1051,11 +1051,6 @@ public boolean isComposite() {
 		return UsageUtil.isComposite(this, isComposite);
 	}
 
-	@Override
-	public boolean isConstant() {
-		return isConstant || isEnd() && isMayTimeVary();
-	}
-
 	//
 
 	/**