LogicalResult matchAndRewrite(
      OpT op, typename OpT::Adaptor adaptor,
      ConversionPatternRewriter &rewriter) const override {
    Type dtype = op.getElementDtype();
    if (!(dtype.isF16() || dtype.isF32() || dtype.isF64() ||
          dtype.isInteger(1) || dtype.isInteger(8) || dtype.isInteger(16) ||
          dtype.isInteger(32) || dtype.isInteger(64))) {
      const char *error_info =

  if (type.isF32()) {
    return tflite::TensorType_FLOAT32;
  } else if (type.isF16()) {
    return tflite::TensorType_FLOAT16;
  } else if (type.isBF16()) {
    return tflite::TensorType_BFLOAT16;
  } else if (type.isF64()) {
    return tflite::TensorType_FLOAT64;
  } else if (mlir::isa<mlir::TF::StringType>(type)) {
    return tflite::TensorType_STRING;
  } else if (mlir::isa<mlir::TF::Quint8Type>(type)) {

  } else if (element_ty.isF32()) {
    auto value = APFloat(std::numeric_limits<float>::epsilon());
    return DenseElementsAttr::get(scalar_ty, value);
  } else if (element_ty.isF64()) {
    auto value = APFloat(std::numeric_limits<double>::epsilon());
    return DenseElementsAttr::get(scalar_ty, value);
  }
  llvm_unreachable("unsupported element type for tf.SoftPlus");
}