func (cr *CredentialRetrieverMock) RetrieveCredentials() (bytes map[string][]byte, e error) {
	args := cr.Called()
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(map[string][]byte), args.Error(1)
}
RetrieveCredentials mocks the CredentialsRetriever func type
package mock
import (
	"github.com/stretchr/testify/mock"
)
type CredentialRetrieverMock struct {
	mock.Mock
}