decoder method
The mapping method to decode value to an instance of this mappers type.
Implementation
T decoder(Object value, DecodingContext context) {
  throw MapperException.unsupportedMethod(MapperMethod.decode, type);
}The mapping method to decode value to an instance of this mappers type.
T decoder(Object value, DecodingContext context) {
  throw MapperException.unsupportedMethod(MapperMethod.decode, type);
}