code: protected List<LightweightTypeReference> doGetActualTypeArguments(XExpression expression) {
  		if (expression == null || expression.eClass() == XbasePackage.Literals.XCLOSURE) {
  			return Collections.emptyList();
  		}
  		ILinkingCandidate result = (ILinkingCandidate) basicGetLinkingMap().get(expression);
  		if (result != null) {
  			return result.getTypeArguments();
  		}
  		return Collections.emptyList();
  	}
docs: /* @Nullable