Convert dax into M code/Custom Column in power Query

[Ujjawaltyagirj]

can someone help me converting my dax code to Custom column/M code in power query

Time = 

var _curr = 'Bank'[TableWithRank.Rank]

var _curr_1 = 'Bank'[TableWithRank.Rank] -1

var _currdate = 'Bank'[TableWithRank.ACTION_DATE]

var _beforedate = CALCULATE(VALUES('Bank'[TableWithRank.ACTION_DATE]),FILTER('Bank', 'Bank'[TableWithRank.Rank] =_curr_1))

return

((_currdate) - (_beforedate))*24*60

[wdx223_Daniel]

Suppose the data is sorted by Rank

NewStep=Table.AddColumn(YourTable,"Time",Function.ScalarVector(Value.Type(each _),(t)=>let a=List.Buffer(YourTable[#"TableWithRank.ACTION_DATE"]) in List.Transform(List.Positions(a),each if _=0 then null else Duration.TotalMinutes(a{_}-a{_-1})))