Use find on a model inside a static

What I try to do is something like this:

A_Schema.statics.init = function init() {
    A_Schema.find({}, {}, {
    }, function (error, docs) {
        if (!error) {
            console.log('There is no error.');
        }
        else {
            console.log(error);
        }
    });
};

I mean, using the find method of the A_Schema model but it keeps crashing.

I suppose that is because the inner A_Schema is must be a properly defined Model and not a Schema, but I don't know how to do it.

I already tried:

A_Schema.statics.init = function init() {
    mongoose.model('A_Schema', A_Schema).find({}, {}, {
    }, function (error, docs) {
        if (!error) {
            console.log('There is no error.');
        }
        else {
            console.log(error);
        }
    });
};

and

A_Schema.statics.init = function init() {
    mongoose.model('A_Schema').find({}, {}, {
    }, function (error, docs) {
        if (!error) {
            console.log('There is no error.');
        }
        else {
            console.log(error);
        }
    });
};

but it keep crashing.

Can you help me?

Thanks in advance

Diosney