public String getIssuer() throws GuacamoleException {

        // Do not reveal code issuer unless enrollment is in progress
        if (key == null)
            return null;

        return confService.getIssuer();

    }
Returns the human-readable name of the entity issuing user accounts. If
the user's key is not being exposed to facilitate enrollment, this value
will not be exposed either.

@return
    The human-readable name of the entity issuing user accounts, or null
    if the user's key is not being exposed to facilitate enrollment.

@throws GuacamoleException
    If the issuer cannot be read from guacamole.properties.
extensions/guacamole-auth-totp/src/main/java/org/apache/guacamole/auth/totp/form/AuthenticationCodeField.java