lib/Ext/field/Checkbox.js
function() {
        var values = [];

        this.getSameGroupFields().forEach(function(field) {
            if (field.getChecked()) {
                values.push(field.getValue());
            }
        });

        return values;
    }
function() {
        var values = [];

        this.getSameGroupFields().forEach(function(field) {
            if (field.getChecked()) {
                values.push(field.getValue());
            }
        });

        return values;
    }
Returns an array of values from the checkboxes in the group that are checked.
@return {Array}