code: def coders(self):
          
          return (PrimitiveTypeCoder,
                  TensorFlowCoder,
                  FunctionCoder,
                  ListCoder,
                  DictCoder,
                  SliceCoder,
                  ParameterCoder,
                  ParamListCoder,
                  ParameterizedCoder,
                  TransformCoder,
                  PriorCoder)
docs: List of default supported coders. First coder in the list has higher priority.