|  | 
            Query the current value of the mapping
            property.
          
static constexpr execution::mapping_t query( execution::mapping_t );
            Do not call this function directly. It is intended for use with the
            query
            customisation point.
          
For example:
auto ex = my_thread_pool.executor(); if (asio::query(ex, asio::execution::mapping) == asio::execution::mapping.thread) ...