code: def from_dict(data, ctx):
          
  
          data = data.copy()
  
          if data.get('bid') is not None:
              data['bid'] = \
                  ctx.instrument.CandlestickData.from_dict(
                      data['bid'], ctx
                  )
  
          if data.get('ask') is not None:
              data['ask'] = \
                  ctx.instrument.CandlestickData.from_dict(
                      data['ask'], ctx
                  )
  
          if data.get('mid') is not None:
              data['mid'] = \
                  ctx.instrument.CandlestickData.from_dict(
                      data['mid'], ctx
                  )
  
          return Candlestick(**data)
docs: Instantiate a new Candlestick from a dict (generally from loading a
          JSON response). The data used to instantiate the Candlestick is a
          shallow copy of the dict passed in, with any complex child types
          instantiated appropriately.