bytes32 public constant TIMELOCK_ROLE = keccak256("TIMELOCK_ROLE");
bytes32 public constant TIMELOCK_UPGRADES_ROLE = keccak256("TIMELOCK_UPGRADES_ROLE");
bytes32 public constant CS_SERVICE_ROLE = keccak256("CS_SERVICE_ROLE");
function checkRole(bytes32 _role, address _account) returns (bool)