|  | 
            Query the current value of the blocking
            property.
          
constexpr execution::blocking_t query( execution::blocking_t ) const;
            Do not call this function directly. It is intended for use with the
            query
            customisation point.
          
For example:
auto ex = my_io_context.get_executor(); if (asio::query(ex, asio::execution::blocking) == asio::execution::blocking.always) ...