docs: func (s *UpdateGatewayInformationInput) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "UpdateGatewayInformationInput"}
  	if s.GatewayARN == nil {
  		invalidParams.Add(request.NewErrParamRequired("GatewayARN"))
  	}
  	if s.GatewayARN != nil && len(*s.GatewayARN) < 50 {
  		invalidParams.Add(request.NewErrParamMinLen("GatewayARN", 50))
  	}
  	if s.GatewayName != nil && len(*s.GatewayName) < 2 {
  		invalidParams.Add(request.NewErrParamMinLen("GatewayName", 2))
  	}
  	if s.GatewayTimezone != nil && len(*s.GatewayTimezone) < 3 {
  		invalidParams.Add(request.NewErrParamMinLen("GatewayTimezone", 3))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }