@Override
    public boolean equals(Object o) {
        if (o == null || !o.getClass().equals(StandardAcl.class)) return false;
        if (o == this) return true;
        StandardAcl other = (StandardAcl) o;
        return resourceType.equals(other.resourceType) &&
            resourceName.equals(other.resourceName) &&
            patternType.equals(other.patternType) &&
            principal.equals(other.principal) &&
            host.equals(other.host) &&
            operation.equals(other.operation) &&
            permissionType.equals(other.permissionType);
    }
A Kafka ACLs which is identified by a UUID and stored in the metadata log.
metadata/src/main/java/org/apache/kafka/metadata/authorizer/StandardAcl.java