DefineEventHandle()

unsafe IntPtr System.Diagnostics.Tracing.IEventProvider.DefineEventHandle	(	uint	eventID,
		string	eventName,
		long	keywords,
		uint	eventVersion,
		uint	level,
		byte *	pMetadata,
		uint	metadataLength )

Implemented in System.Diagnostics.Tracing.EtwEventProvider, System.Diagnostics.Tracing.EventPipeEventProvider, and System.Diagnostics.Tracing.NoOpEventProvider.