@subsection Expire Defines an expiry time after which token balances or supply @emph{cannot change}. A contract defining an expiry @emph{must not} allow changing the expiration time to a time in the past. @table @dfn @item ERC165 Interface identifier @include ../../build/Expire.interface @item Solidity interface definition @include ../../build/contract_Expire.texi @item Example implementation @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @end table