code: def _install():
      from .to_csv import to_csv
      from .to_sql import to_sql
      from .to_parquet import to_parquet
      from .to_vineyard import to_vineyard
      from ..operands import DATAFRAME_TYPE, SERIES_TYPE
  
      for cls in DATAFRAME_TYPE:
          setattr(cls, "to_csv", to_csv)
          setattr(cls, "to_sql", to_sql)
          setattr(cls, "to_parquet", to_parquet)
          setattr(cls, "to_vineyard", to_vineyard)
  
      for cls in SERIES_TYPE:
          setattr(cls, "to_csv", to_csv)
          setattr(cls, "to_sql", to_sql)
  
label_desc: Use image node_id 1 for calling a global function with example usage: _install() without return types