text: #pragma once
  
  #include <units/isq/si/prefixes.h>
  #include <units/quantity.h>
  // get at the units text of the quantity, without its numeric value
  inline auto constexpr units_str(const units::Quantity auto& q)
  {
    typedef std::remove_cvref_t<decltype(q)> qtype;
    return units::detail::unit_text<typename qtype::dimension, typename qtype::unit>();
  }
  