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