Creates a new Query.
By default, context is ManagedContext.defaultContext. The entity of this instance is found by
evaluating InstanceType in context.
Source
factory Query([ManagedContext context]) {
var ctx = context ?? ManagedContext.defaultContext;
var entity = ctx.dataModel.entityForType(InstanceType);
return ctx.persistentStore.newQuery<InstanceType>(ctx, entity);
}