let description = [{
    Interface for ops that support sparse computation.
  }];

  let methods = [
    InterfaceMethod<
      [{Returns the indices of sparse operands.}],
      "std::vector<int>", "GetSparseOperands", (ins)
    >,
    InterfaceMethod<
      [{Returns the supported block size of float sparse operands.}],
      "std::vector<std::vector<int>>", "GetFloatBlockSize", (ins)
    >,
    InterfaceMethod<

};

void DenseToSparsePass::runOnOperation() {
  func::FuncOp func = getOperation();
  OpBuilder builder(func);

  func.walk([&](SparseOpInterface sparse_op) {
    const auto& sparse_operands = sparse_op.GetSparseOperands();
    std::vector<std::vector<int>> supported_block_size;
    for (int operand : sparse_operands) {
      auto* op = sparse_op.getOperation();
      auto value = op->getOperand(operand);

  let extraClassDeclaration = [{
    // AffineQuantizedOpInterface:
    int GetChannelDimIndex() { return 0; }
    int GetQuantizationDimIndex() { return 0; }
    // SparseOpInterface:
    std::vector<int> GetSparseOperands() { return {1}; }
    std::vector<std::vector<int>> GetFloatBlockSize() { return {}; }
    std::vector<std::vector<int>> GetQuantizedBlockSize() { return {}; }
    // DynamicRangeQuantizedOpInterface: