Sec. 6.1. (a) A limited liability company formed under this article after June 30, 1999, is governed by this section.
(b) Unless otherwise provided in a written operating agreement, a member may not withdraw from a limited liability company before the dissolution and winding up of the limited liability company. A member may withdraw from a limited liability company only at the time or upon the occurrence of events specified in the operating agreement and in accordance with the operating agreement.