code: def get_state(self):
      state = np.hstack((self.cash * 2**-18, self.stocks * 2**-3))
      for i in range(self.lookback):
          tech_i = self.tech_array[self.time - i]
          normalized_tech_i = tech_i * 2**-15
          state = np.hstack((state, normalized_tech_i)).astype(
              np.float32
          )
      return state
  
file_path: FinRL/finrl/meta/env_cryptocurrency_trading/env_multiple_crypto.py
imports: from __future__ import annotations
  import numpy
label_desc: Use image node_id 4 for calling the CryptoEnv obj's underlying member method code with example usage: obj.get_state() and returns: state