Returns the parameter(s) that would be included in a standard form submit for this field. Typically this will be
an object with a single name-value pair, the name being this field's {@link #getName name} and the value being
its current stringified value. More advanced field implementations may return more than one name-value pair.

Note that the values returned from this method are not guaranteed to have been successfully {@link #validate
validated}.

@return {Object} A mapping of submit parameter names to values; each value should be a string, or an array of
strings if that particular name has multiple values. It can also return null if there are no parameters to be
submitted.
function() {
        var me = this,
            data = null;
        if (!me.disabled && me.submitValue && !me.isFileUpload()) {
            data = {};
            data[me.getName()] = '' + me.getValue();
        }
        return data;
    }