How would I start going about this?  If I wanted the same data I was pulling from this previously using PythonQuandl and instead use NasdaqDataLink to still pull specific Key Economic Indicators. Lets say the following example:

from QuantConnect.Python import PythonQuandl
import numpy as np
class QuandlImporterAlgorithm(QCAlgorithm):
   def Initialize(self):
       self.quandlCode = "OECD/KEI_LOLITOAA_OECDE_ST_M"
       #self.SetBrokerageModel(BrokerageName.AlphaStreams)
   ## Optional argument - personal token necessary for restricted dataset
       #Quandl.SetAuthCode("PrzwuZR28Wqegvv1sdJ7")
       
       self.SetStartDate(2019,1,1)                                 #Set Start Date
       self.SetEndDate(2020,1,1)            #Set End Date
       self.SetCash(25000)                                         #Set Strategy Cash
       self.SetWarmup(456)
       self.SetBenchmark("SPY")
       self.init = True
       self.kei = self.AddData(QuandlCustomColumns, self.quandlCode, Resolution.Daily, TimeZones.NewYork).Symbol
       self.sma = self.SMA(self.kei, 1)
       self.mom = self.MOMP(self.kei, 2)

       

Any idea where I should first start in trying to solve/understand this?