firstValue
Get the first non-null value of the place.
Ensure isEmpty returns true before calling this method, or catch the exception.
Return
The first non-null value of the place.
Throws
If the place is empty.
Get the first non-null value of the place.
Ensure isEmpty returns true before calling this method, or catch the exception.
The first non-null value of the place.
If the place is empty.