UseAccountRefreshCheckTokens is where we check whether we could refresh tokens or not because we accept multiple authentication algo (access key, SSO, ...) so, we will go through each step and refresh token in each pipeline.

UseAccountSignCheckTokens is where we check whether we could generate tokens or not because we accept multiple authentication algo (access key, SSO, ...) so, we will go through each step and sign request in each pipeline.

UseAccountVerifyCheckAccount is where we check whether we could verify access token or not because we accept multiple authentication algo (access key, SSO, ...) so, we will go through each step and verify request in each pipeline.