//	                 of token, separators, and quoted-string>
//
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 :
//
//	TEXT           = <any OCTET except CTLs,
//	                  but including LWS>
//	LWS            = [CRLF] 1*( SP | HT )
//	CTL            = <any US-ASCII control character
//	                 (octets 0 - 31) and DEL (127)>
//
// RFC 7230 says:
//

	                    | "CONNECT"                ; Section 9.9
	                    | extension-method
	   extension-method = token
	     token          = 1*<any CHAR except CTLs or separators>
	*/
	return len(method) > 0 && strings.IndexFunc(method, isNotToken) == -1
}

// NewRequest wraps [NewRequestWithContext] using [context.Background].

            `tf.function`, and graph modes. This gets rid of the need for users
            to manually call `Model._set_inputs` when using Custom Training
            Loops(CTLs).
        *   Dynamic shapes are supported for generators by calling the Model on
            the first batch we "peek" from the generator. This used to happen