[Purpose] Defines a setting that is required. When Test() is executed it always throws an exception. Must be replaced by another setting. [Class] 
RequiredSetting
C o n f i g B a s e
S e t t i n g B a s e
R e q u i r e d S e t t i n g
S t r i n g S e t t i n g
S a f e C r e a t e D i r S e t t i n g
S q l C o n n e c t i o n S t r i n g S e t t i n g
B o o C o n f i g