public static EntityManager get(String puScopedName) {
        Map<String, EntityManager> map = nonTxStack.peek();
        if (map != null) {
            return map.get(puScopedName);
        }
        return null;
    }
public static EntityManager get(String puScopedName) {
        Map<String, EntityManager> map = nonTxStack.peek();
        if (map != null) {
            return map.get(puScopedName);
        }
        return null;
    }
public static EntityManager get ( String puScopedName ) { Map < String , EntityManager > map = nonTxStack . peek ( ) ; if ( map != null ) { return map . get ( puScopedName ) ; } return null ; }
Return the transactional entity manager for the specified scoped persistence unit name

@param puScopedName
@return
Return the transactional entity manager for the specified scoped persistence unit name