</p>

<pre class="ebnf">
TypeDecl = "type" ( TypeSpec | "(" { TypeSpec ";" } ")" ) .
TypeSpec = AliasDecl | TypeDef .
</pre>

<h4 id="Alias_declarations">Alias declarations</h4>

<p>
An alias declaration binds an identifier to the given type
[<a href="#Go_1.9">Go 1.9</a>].
</p>

<pre class="ebnf">
AliasDecl = identifier [ TypeParameters ] "=" Type .

from fastapi.testclient import TestClient


class ResponseLevel0(JSONResponse):
    media_type = "application/x-level-0"


class ResponseLevel1(JSONResponse):
    media_type = "application/x-level-1"


class ResponseLevel2(JSONResponse):
    media_type = "application/x-level-2"


class ResponseLevel3(JSONResponse):
    media_type = "application/x-level-3"


class ResponseLevel4(JSONResponse):

// https://www.iana.org/domains/root/db/gives.html
gives

// giving : Public Interest Registry
// https://www.iana.org/domains/root/db/giving.html
giving

// glass : Binky Moon, LLC
// https://www.iana.org/domains/root/db/glass.html
glass

// gle : Charleston Road Registry Inc.
// https://www.iana.org/domains/root/db/gle.html
gle

// global : Identity Digital Limited