func NewMockConfigRetriever() *MockConfigRetriever {
	return &MockConfigRetriever{
		configs: make(map[string]proto.Message),
	}
}
NewMockConfigRetriever is a constructor for MockConfigRetriever.
package configRetriever
import "github.com/golang/protobuf/proto"
type MockConfigRetriever struct {
	configs map[string]proto.Message
}
func (m *MockConfigRetriever) GetConfig(key string) proto.Message {
	return m.configs[key]
}
func (m *MockConfigRetriever) AddConfig(key string, val proto.Message) {
	m.configs[key] = val
}