Multi-threading to the “combine” function

Hello folks,

Could anybody guide me, please?

Can multi-threading be designated to the “combine” function in the example below?

Thank you in advance

Boris

julia> begin 
           using DataFrames, Chain
           df1 = DataFrame(a = [1, 2], b = [3, 4])
           df2 = DataFrame(c = [5, 6], d = [7, 8])
           function analyze(df1, df2)
               DataFrame(x = first(df1.a), y = first(df2.c))
           end
           @chain df1 begin 
               groupby(:a)
               combine(_) do sdf1
                   analyze(sdf1, df2)
               end
           end
       end