code: func (cm *CompanyManager) Get(id string) (*Company, error) {
  	var company Company
  
  	objectId := bson.ObjectIdHex(id)
  
  	if err := cm.collection.FindId(objectId).One(&company); err != nil {
  		return nil, err
  	}
  
  	return &company, nil
  }
docs: // Get company by ID.