Unable to call function in meteor package using method?

I'm trying to use a geocoder package I found on atmosphere (aldeed:geocoder) which use the node-geocoder package. The meteor package specifies that in order to perform a new geocode, i'm to create a new instance of GeoCoder, and then call the geocode method on it, passing in an address string, like so:

var geo = new GeoCoder();
var result = geo.geocode("location");

If I put the above in a server.js file in the server file of my app and console.log result, I get an object printed to the terminal as expected. The problem I'm running into is when I try to call this using a meteor method, in response to user input from a search box. My template helper has this in it:

Template.layout.events({
    'submit form': function(e) {
        e.preventDefault();

    var search = {
        location: $(e.target).find('[name=search]').val()
    }

    console.log(search.location);

    Meteor.call('getGeoCode', search.location, function(result) {
        console.log(result)
    });
}

});

and the collection's file, forecasts.js has this in it:

Forecasts = new Mongo.Collection('forecasts');


    Meteor.methods({
        getGeoCode: function(search) {
            var geo = new GeoCoder();
            result = geo.geocode(search);
            return result;
        }
    });

But when I try it out, I get an error in the console that tells me that GeoCoder is undefined. Specifically:

"Exception while simulating the effect of invoking 'getGeoCode'" ReferenceError: GeoCoder is not defined

So, what's going on here? Why isn't it possible to create a new GeoCoder instance in that method and call it like I'm doing?