Add abi signature encoding list

solidity/Throttle.sol

@@ -9,6 +9,11 @@ interface IThrottle {
 	// Implements ACL
 	function have(address _address) external view returns(bool);
 
+	// Returns the timestamp when the resource may next be used by the given address.
+	// A return value of 0 or a timestamp before the current timestamp indicates that the resource may used momentarily.
+	// A return value of max uint265 can be used to indicate that the resource may never be used again by the address.
+	function next(address _address) external returns(bool);
+
 	// Must be called when the resource is being used.
 	function poke(address _address) external returns(bool);
 }