old_contents: from pipeline.component.column_expand import ColumnExpand
  from pipeline.component.data_statistics import DataStatistics
  from pipeline.component.dataio import DataIO
  from pipeline.component.data_transform import DataTransform 
  from pipeline.component.evaluation import Evaluation
  from pipeline.component.hetero_data_split import HeteroDataSplit
  from pipeline.component.hetero_fast_secureboost import HeteroFastSecureBoost
  from pipeline.component.hetero_feature_binning import HeteroFeatureBinning
  from pipeline.component.hetero_feature_selection import HeteroFeatureSelection
  from pipeline.component.hetero_ftl import HeteroFTL
  from pipeline.component.hetero_linr import HeteroLinR
  from pipeline.component.hetero_lr import HeteroLR
  from pipeline.component.hetero_nn import HeteroNN
  from pipeline.component.hetero_pearson import HeteroPearson
  from pipeline.component.hetero_poisson import HeteroPoisson
  from pipeline.component.hetero_secureboost import HeteroSecureBoost
  from pipeline.component.homo_data_split import HomoDataSplit
  from pipeline.component.homo_lr import HomoLR
  from pipeline.component.homo_nn import HomoNN
  from pipeline.component.homo_secureboost import HomoSecureBoost
  from pipeline.component.intersection import Intersection
  from pipeline.component.local_baseline import LocalBaseline
  from pipeline.component.one_hot_encoder import OneHotEncoder
  from pipeline.component.psi import PSI
  from pipeline.component.reader import Reader
  from pipeline.component.scorecard import Scorecard
  from pipeline.component.sampler import FederatedSample
  from pipeline.component.scale import FeatureScale
  from pipeline.component.union import Union
  from pipeline.component.feldman_verifiable_sum import FeldmanVerifiableSum
  from pipeline.component.sample_weight import SampleWeight
  from pipeline.param.sbt_feature_transformer_param import SBTTransformerParam
  
  
  __all__ = ["DataStatistics", "DataIO", "Evaluation", "HeteroDataSplit",
             "HeteroFastSecureBoost", "HeteroFeatureBinning", "HeteroFeatureSelection",
             "HeteroFTL", "HeteroLinR", "HeteroLR", "HeteroNN",
             "HeteroPearson", "HeteroPoisson", "HeteroSecureBoost", "HomoDataSplit",
             "HomoLR", "HomoNN", "HomoSecureBoost", "Intersection",
             "LocalBaseline", "OneHotEncoder", "PSI", "Reader", "Scorecard",
             "FederatedSample", "FeatureScale", "Union", "ColumnExpand", "FeldmanVerifiableSum",
             "SampleWeight", "DataTransform", "SBTTransformerParam"]
  
  
new_contents: from pipeline.component.column_expand import ColumnExpand
  from pipeline.component.data_statistics import DataStatistics
  from pipeline.component.dataio import DataIO
  from pipeline.component.data_transform import DataTransform 
  from pipeline.component.evaluation import Evaluation
  from pipeline.component.hetero_data_split import HeteroDataSplit
  from pipeline.component.hetero_fast_secureboost import HeteroFastSecureBoost
  from pipeline.component.hetero_feature_binning import HeteroFeatureBinning
  from pipeline.component.hetero_feature_selection import HeteroFeatureSelection
  from pipeline.component.hetero_ftl import HeteroFTL
  from pipeline.component.hetero_linr import HeteroLinR
  from pipeline.component.hetero_lr import HeteroLR
  from pipeline.component.hetero_nn import HeteroNN
  from pipeline.component.hetero_pearson import HeteroPearson
  from pipeline.component.hetero_poisson import HeteroPoisson
  from pipeline.component.hetero_secureboost import HeteroSecureBoost
  from pipeline.component.homo_data_split import HomoDataSplit
  from pipeline.component.homo_lr import HomoLR
  from pipeline.component.homo_nn import HomoNN
  from pipeline.component.homo_secureboost import HomoSecureBoost
  from pipeline.component.intersection import Intersection
  from pipeline.component.local_baseline import LocalBaseline
  from pipeline.component.one_hot_encoder import OneHotEncoder
  from pipeline.component.psi import PSI
  from pipeline.component.reader import Reader
  from pipeline.component.scorecard import Scorecard
  from pipeline.component.sampler import FederatedSample
  from pipeline.component.scale import FeatureScale
  from pipeline.component.union import Union
  from pipeline.component.feldman_verifiable_sum import FeldmanVerifiableSum
  from pipeline.component.sample_weight import SampleWeight
  from pipeline.component.sbt_feature_transformer import SBTTransformer
  
  
  __all__ = ["DataStatistics", "DataIO", "Evaluation", "HeteroDataSplit",
             "HeteroFastSecureBoost", "HeteroFeatureBinning", "HeteroFeatureSelection",
             "HeteroFTL", "HeteroLinR", "HeteroLR", "HeteroNN",
             "HeteroPearson", "HeteroPoisson", "HeteroSecureBoost", "HomoDataSplit",
             "HomoLR", "HomoNN", "HomoSecureBoost", "Intersection",
             "LocalBaseline", "OneHotEncoder", "PSI", "Reader", "Scorecard",
             "FederatedSample", "FeatureScale", "Union", "ColumnExpand", "FeldmanVerifiableSum",
             "SampleWeight", "DataTransform", "SBTTransformer"]
  
  
subject: add sbt transformer into it __init__.py