Update a flow on behalf of a certain sender account using ACL permissions
Function Header
/**
* @dev Updates flow as an operator without userData
* @param token The token to flow
* @param sender The sender of the flow
* @param receiver The receiver of the flow
* @param flowRate The desired flowRate
*/
function updateFlowFrom(
ISuperToken token,
address sender,
address receiver,
int96 flowRate
) internal returns (bool)
