In practice we've found that we rarely use the "new Loader(hooks)` option and
instead this is more common:
var loader = new Loader();
var loaderFetch = loader.fetch.bind(loader);
loader.fetch = function (loadRecord) {
// do something
return loaderFetch(loadRecord);
};
This way we can think of each modification to the loader in isolation and we
can use the same code to modify a custom loader instance and to modify the
System instance.
-Juan_______________________________________________
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