nlobjAssistant.addField ( name , type , label , source , group )

/**
* add a field to this page and return it.
* @param {string} name field name
* @param {string} type field type
* @param {string} [label] field label
* @param {string, int} [source] script ID or internal ID for source list (select and multiselects only) -or- radio value for radio fields
* @param {string} [group] group name that this field will live on. If empty then the field is added to the main section of the page
* @return {nlobjField}
*
* @method
* @memberOf nlobjAssistant
*
* @since 2009.2
*/