Sec. 5. As used in this chapter, "designated family member" means the:
(1) spouse;
(2) child;
(3) grandchild;
(4) parent;
(5) sibling;
(6) niece;
(7) nephew; or
(8) spouse of an individual under subdivision (2) through (7);
of a recreational vehicle dealer who has been nominated as the successor for the recreational vehicle dealer under a written agreement filed by the recreational vehicle dealer with the recreational vehicle manufacturer or recreational vehicle distributor.