docs: func (s *PhysicalConnectionRequirements) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "PhysicalConnectionRequirements"}
  	if s.AvailabilityZone != nil && len(*s.AvailabilityZone) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("AvailabilityZone", 1))
  	}
  	if s.SubnetId != nil && len(*s.SubnetId) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("SubnetId", 1))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }