public static List<AclBinding> aclBindings(String aclPrinciple) {
        return FakeLocalMetadataStore.ALL_ACLS.getOrDefault("User:" + aclPrinciple, new Vector<>());
    }
get list of {@link AclBinding} stored for kafka principle in allACLs.
@param aclPrinciple name of kafka user
@return {@link List<AclBinding>}
connect/mirror/src/test/java/org/apache/kafka/connect/mirror/clients/admin/FakeLocalMetadataStore.java