'Checks for an override for the field identified by `name` in `block`.
Returns the overridden value or `NOTSET` if no override is found.'

def get_override(self, block, name):

    if (not overrides_disabled()):
        for provider in self.providers:
            value = provider.get(block, name, NOTSET)
            if (value is not NOTSET):
                return value
    return NOTSET
