public static TenantMetaData fromJsonString(TenantName tenantName, String jsonString) {
        try {
            Slime data = SlimeUtils.jsonToSlime(jsonString);
            Inspector root = data.get();
            Inspector created = root.field(createTimestampKey);
            Inspector lastDeployTimestamp = root.field(lastDeployTimestampKey);

            return new TenantMetaData(tenantName,
                                      Instant.ofEpochMilli(lastDeployTimestamp.asLong()),
                                      Instant.ofEpochMilli(created.asLong()));
        } catch (Exception e) {
            throw new IllegalArgumentException("Error parsing json metadata", e);
        }
    }
Meta data for a tenant like tenant name, tenant creation time and last deployment time, stored in ZooKeeper

@author hmusum
configserver/src/main/java/com/yahoo/vespa/config/server/tenant/TenantMetaData.java