Missing Rethrow with generated message

[arteny]

Throw method accepts only parameter name argument, so i can't rethrow with my custom exception but with lib generated text, do i need to do

		try
		{
			size
				.Throw()
				.IfGreaterThan(maxSize);
		}
		catch (Exception e)
		{
			throw new MyException(e.Message);
		}

is it possilbe to add generated exception also as argument for Throw?