The syntax of algorithms are different from analyzers but I could not find documentation on this.

For example, an algorithm works like this:

    def process(self, inputs, data_loaders, outputs):

        outputs["features"].write({"value": out})

while an analyzer would be:

    def process(self, inputs, data_loaders, output):

        output.write({"features": {"value": out}})

I have two issues here:

1. why analyzers code should be different?
2. where is this documented?