##### basic_system_executor::query (3 of 4 overloads)

Query the current value of the `blocking` property.

    static constexpr execution::blocking_t query(
        execution::blocking_t );

Do not call this function directly. It is intended for use with the `query` customisation point.

For example:

    asio::system_executor ex;
    if (asio::query(ex, asio::execution::blocking)
          == asio::execution::blocking.always)
      ...