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				"application/x-sas-mddb",
				"application/x-sas-dmdb",
				"application/x-sas-itemstor",
				"application/x-sas-utility",
				"application/x-sas-putility",
				"application/x-sas-transport",
				"application/x-sas-backup",
				"application/x-sc",
				"application/x-sh",
				"application/x-shar",
				"application/x-shockwave-flash",
				"application/x-silverlight-app",

     *
     * **This is an evolving set.** Future releases include support for transitional
     * protocols. The http/1.1 transport will never be dropped.
     *
     * If multiple protocols are specified, [ALPN][alpn] will be used to negotiate a transport.
     * Protocol negotiation is only attempted for HTTPS URLs.
     *

3. This `yield from` tells the function to iterate over that thing named `file_like`. And then, for each part iterated, yield that part as coming from this generator function (`iterfile`).

    So, it is a generator function that transfers the "generating" work to something else internally.

    By doing it this way, we can put it in a `with` block, and that way, ensure that the file-like object is closed after finishing.

/// tip