<basic-usage>
import shirokumas as sk

encoder = sk.AggregateEncoder(...)
encoder = sk.CountEncoder(...)
encoder = sk.NullEncoder(...)
encoder = sk.OneHotEncoder(...)
encoder = sk.MultiLabelBinarizer(...)
encoder = sk.OrdinalEncoder(...)
encoder = sk.TargetEncoder(...)

train_x, train_y, test_x = ...

encoder.fit(train_x, train_y)
encoded_train_x = encoder.transform(train_x)
encoded_test_x = encoder.transform(test_x)
</basic-usage>
