Fetch\Enum\Method

Cases: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS, TRACE, and CONNECT. Values are uppercase HTTP method strings. fromString() normalizes input to uppercase and throws ValueError if unknown; tryFromString() returns the supplied default (null by default) for unknown values.

supportsRequestBody() returns true for POST, PUT, PATCH, and DELETE. It returns false for GET, HEAD, OPTIONS, TRACE, and CONNECT.