docs: func (s *SearchGameSessionsInput) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "SearchGameSessionsInput"}
  	if s.FilterExpression != nil && len(*s.FilterExpression) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("FilterExpression", 1))
  	}
  	if s.Limit != nil && *s.Limit < 1 {
  		invalidParams.Add(request.NewErrParamMinValue("Limit", 1))
  	}
  	if s.NextToken != nil && len(*s.NextToken) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("NextToken", 1))
  	}
  	if s.SortExpression != nil && len(*s.SortExpression) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("SortExpression", 1))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }