Signed-off-by: Alexey Rusakov <Alexey.Rusakov@pm.me>
Part of https://github.com/matrix-org/matrix-doc/issues/857 Reference: d69decd5c7/synapse/rest/client/v2_alpha/openid.py (L31-L58)
d69decd5c7/synapse/rest/client/v2_alpha/openid.py (L31-L58)