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##### io_context::basic_executor_type::query (1 of 3 overloads)

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_io_context.get_executor();
    if (boost::asio::query(ex, boost::asio::execution::mapping)
          == boost::asio::execution::mapping.thread)
      ...