codeChallengeMethodsSupported
@SerialName(value = "code_challenge_methods_supported")
OPTIONAL. JSON array containing a list of Proof Key for Code Exchange (PKCE) RFC7636 code challenge methods supported by this authorization server. Code challenge method values are used in the "code_challenge_method" parameter defined in Section 4.3 of RFC7636. The valid code challenge method values are those registered in the IANA "PKCE Code Challenge Methods" registry IANA.OAuth.Parameters. If omitted, the authorization server does not support PKCE.