You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ocr2.go
    path of file: ./repos/chainlink/integration-tests/testconfig/ocr2
    
    the code of the file until where you have to start completion: package ocr

import (
	"errors"

	"github.com/smartcontractkit/chainlink-testing-framework/blockchain"
)

type Config struct {
	Soak   *SoakConfig `toml:"Soak"`
	Common *Common     `toml:"Common"`
}

func (o *Config) Validate() error {
	if o.Common != nil {
		if err := o.Common.Validate(); err != nil {
			return err
		}
	}
	if o.Soak != nil {
		if err := o.Soak.Vali
    
func (o *SoakConfig) Validate() error {
	if o.OCRVersion == nil || *o.OCRVersion == "" {
		return errors.New("ocr_version must be set to either 1 or 2")
	}
	if o.NumberOfContracts == nil || *o.NumberOfContracts <= 1 {
		return errors.New("number_of_contracts must be set and be greater than 1")
	}
	if o.TimeBetweenRounds == nil || o.TimeBetweenRounds.Duration == 0 {
		return errors.New("time_between_rounds must be set and be a positive integer")
	}
	return nil
}