mocktracer/mockspan.go
func (s *MockSpan) LogFields(fields ...log.Field) {
	s.logFieldsWithTimestamp(time.Now(), fields...)
}
func (s *MockSpan) LogFields(fields ...log.Field) {
	s.logFieldsWithTimestamp(time.Now(), fields...)
}
func ( s * MockSpan ) LogFields ( fields ... log . Field ) { s . logFieldsWithTimestamp ( time . Now ( ) , fields ... ) }
// LogFields belongs to the Span interface
LogFields belongs to the Span interface