track
open fun <T : ContractState> trackBy(contractStateType: Class<out T>): DataFeed<Vault.Page<T>, Vault.Update<T>>
open fun <T : ContractState> trackBy(contractStateType: Class<out T>, criteria: QueryCriteria): DataFeed<Vault.Page<T>, Vault.Update<T>>
open fun <T : ContractState> trackBy(contractStateType: Class<out T>, paging: PageSpecification): DataFeed<Vault.Page<T>, Vault.Update<T>>
open fun <T : ContractState> trackBy(contractStateType: Class<out T>, criteria: QueryCriteria, paging: PageSpecification): DataFeed<Vault.Page<T>, Vault.Update<T>>
open fun <T : ContractState> trackBy(contractStateType: Class<out T>, criteria: QueryCriteria, sorting: Sort): DataFeed<Vault.Page<T>, Vault.Update<T>>
open fun <T : ContractState> trackBy(contractStateType: Class<out T>, criteria: QueryCriteria, paging: PageSpecification, sorting: Sort): DataFeed<Vault.Page<T>, Vault.Update<T>>