Configuration settings that are mandatory can be marked as such by wrapping them with this template. If the variable is not set, then an exception is thrown.
The value can be accessed with the opCall method
Returns the value that is wrapped
Sets the wrapped value to val
the original type of the variable
See Implementation
Configuration settings that are mandatory can be marked as such by wrapping them with this template. If the variable is not set, then an exception is thrown.
The value can be accessed with the opCall method