Bug 118516 [DataBinding] Asserts should provide meaningful messages
Currently we use JDK Assert in various places in the code. However, if an assert fails, there often is no indication of why it failed or what the assert failure means without looking at the code indicated by the stack trace. It would be nicer if we would log exceptions or throw RuntimeExceptions with useful error messages instead.
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/DataBindingContext.java
IObservableList modelObservableList,
			UpdateListStrategy targetToModel, UpdateListStrategy modelToTarget) {
		UpdateListStrategy targetToModelStrategy = targetToModel != null ? targetToModel
				: createTargetToModelUpdateListStrategy(targetObservableList,
						modelObservableList);
		UpdateListStrategy modelToTargetStrategy = modelToTarget != null ? modelToTarget
				: createModelToTargetUpdateListStrategy(modelObservableList,
						targetObservableList);
		targetToModelStrategy.fillDefaults(targetObservableList,
				modelObservableList);
		modelToTargetStrategy.fillDefaults(modelObservableList,
				targetObservableList);
		ListBinding result = new ListBinding(targetObservableList,
				modelObservableList, targetToModelStrategy,
				modelToTargetStrategy);
		result.init(this);
		return result;
	}
	/**
	 * @param modelObservableList
	 * @param targetObservableList
	 * @return an update list strategy
	 */
	protected UpdateListStrategy createModelToTargetUpdateListStrategy(
			IObservableList modelObservableList,
			IObservableList targetObservableList) {
		return new UpdateListStrategy();
	}
	/**
	 * @param targetObservableList