Utility method to obtain the specified key as a 'double' value
Only values of Number will be converted to double, all other types will generate an exception
Provided for compatibility to other JSON models.
Utility method to obtain the specified key as a 'int' value
Only values of Number will be converted to integer, all other types will generate an exception.
Utility method to obtain the specified key as a 'long' value
Only values of Number will be converted to long, all other types will generate an exception.
Utility method to obtain the specified key as a 'short' value
Only values of Number will be converted to short, all other types will generate an exception.