Returns a Boolean value that indicates whether the receiver has at least one member in a given character plane.
Original signature is '- (BOOL)hasMemberInPlane:(uint8_t)thePlane'
Available in Mac OS X v10.2 and later.


- thePlane (Byte)
- A character plane.

YES if the receiver has at least one member in thePlane, otherwise NO.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)