class_docstr: A mini client example that reads some data file and formats
  it for the post call to predict
code: def __init__(
      self,
      host,
      port,
      scheme="http",
      endpoint="predict",
      missing_values="mean",
  ):
      self.url = f"{scheme}://{host}:{port}/{endpoint}"
      self.missing_values = missing_values
  
imports: import json
  import requests
  from igel.preprocessing import handle_missing_values, read_data_to_df
label_desc: Use image node_id 1 to create a new IgelClient object  with example: obj = IgelClient(host, port, scheme, endpoint, missing_values)