code: def get_implied_volatility_data(
      market, valuation_date=None, volatility_type=None, currency=None
  ):
      """Return the implied volatility data from the market data."""
      del valuation_date, volatility_type, currency
      vol_data = market.volatility_curve
      return vol_data
  
imports: import enum
  from typing import Optional
  import tensorflow.compat.v2
  from tf_quant_finance import datetime
  from tf_quant_finance import types
  from tf_quant_finance import utils
label_desc: Use image node_id 4 for calling a global function with example usage: get_implied_volatility_data(market, valuation_date, volatility_type, currency) and returns: vol_data