@staticmethod<EOL><INDENT>def __verify_auth_params(username, password, access_token):<DEDENT>
if all(v is not None for v in [username, password, access_token]):<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>if (username is None or password is None) and access_token is None:<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>
Verify that valid authentication parameters were passed to __init__