UNKNOWN constant Null safety
Implementation
static const WALLET_EVENT_TYPE UNKNOWN = WALLET_EVENT_TYPE._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UNKNOWN');
static const WALLET_EVENT_TYPE UNKNOWN = WALLET_EVENT_TYPE._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UNKNOWN');