backbone-formview.js
function (optionCollection, key, model, collection) {
        if (optionCollection) {
            return strTo(optionCollection, model, Collection) || collection;
        }
        return strTo(key, model, Collection) || null;
    }
function (optionCollection, key, model, collection) {
        if (optionCollection) {
            return strTo(optionCollection, model, Collection) || collection;
        }
        return strTo(key, model, Collection) || null;
    }
function ( optionCollection , key , model , collection ) { if ( optionCollection ) { return strTo ( optionCollection , model , Collection ) || collection ; } return strTo ( key , model , Collection ) || null ; }
Similar to getSubModel except for collections and does not pass the parent collection if no option collection is specified and the schema key cannot locate a sub collection, then null is returned
Similar to getSubModel except for collections and does not pass the parent collection if no option collection is specified and the schema key cannot locate a sub collection then null is returned