docstr: Write the input DataFrame to the path in the Parquet format.
  
  Optionally includes the DataFrame index in the Parquet file.
docstr_tok: ["Write","the","input","DataFrame","to","the","path","in","the","Parquet","format",".","Optionally","includes","the","DataFrame","index","in","the","Parquet","file","."]
code: def to_parquet(self, df, path, index=False):
      """Write the input DataFrame to the path in the Parquet format.
  
      Optionally includes the DataFrame index in the Parquet file.
      """
      raise NotImplementedError()
  
imports: from abc import ABC, abstractmethod
  from ludwig.utils.types import DataFrame
label_desc: Use image node_id 12 for calling the DataFrameEngine obj's underlying member method code with example usage: obj.to_parquet(df, path, index) without return types