code: func (ssa *SQLStorageAuthority) GetAuthorization2(ctx context.Context, id *sapb.AuthorizationID2) (*corepb.Authorization, error) {
  	obj, err := ssa.dbMap.Get(authz2Model{}, *id.Id)
  	if err != nil {
  		return nil, err
  	}
  	if obj == nil {
  		return nil, berrors.NotFoundError("authorization %d not found", *id.Id)
  	}
  	return modelToAuthzPB(obj.(*authz2Model))
  }
docs: // GetAuthorization2 returns the authz2 style authorization identified by the provided ID or an error.
  // If no authorization is found matching the ID a berrors.NotFound type error is returned. This method
  // is intended to deprecate GetAuthorization.