Method Grow

include/sonic/writebuffer.h:128–128

* @brief Increase the capacity of buffer if cnt is greater than the * remained capacity in the buffer. Otherwise, do nothing. */

   * remained capacity in the buffer. Otherwise, do nothing.
   */
  sonic_force_inline char* Grow(size_t cnt) { return stack_.Grow(cnt); }

  /**
   * @brief Get the end of the buffer.