docs: func (s *GetCertificateInput) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "GetCertificateInput"}
  	if s.CertificateArn == nil {
  		invalidParams.Add(request.NewErrParamRequired("CertificateArn"))
  	}
  	if s.CertificateArn != nil && len(*s.CertificateArn) < 5 {
  		invalidParams.Add(request.NewErrParamMinLen("CertificateArn", 5))
  	}
  	if s.CertificateAuthorityArn == nil {
  		invalidParams.Add(request.NewErrParamRequired("CertificateAuthorityArn"))
  	}
  	if s.CertificateAuthorityArn != nil && len(*s.CertificateAuthorityArn) < 5 {
  		invalidParams.Add(request.NewErrParamMinLen("CertificateAuthorityArn", 5))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }