Optional[customOptional[unknownEvent code (unique within the API service), in UpperCamelCase, e.g. "DiskAttached"
OptionalerrorDescribes a GRPC error status associated with an ERROR or WARN level event, if known. The error must have a standard GRPC
code (which must not be OK (0)) and a human-readable message. A standard common.v1.ServiceError should also be
included in details
Severity level for the event
A human-readable message describing what has happened
(and suggested actions for the user, if this is a WARN or ERROR level event)
OptionaloccurredTime at which the event has occurred
Represents an API Resource-related event which is potentially important to the end-user. What exactly constitutes an event to be reported is service-dependent