AnnotatedDataFrame_V2_syntax.scala

import shapeless.::
import shapeless.ops.hlist.Prepend

object implicits {
  implicit class AnnotatedDataFrameSyntax[L, LJ <: JoinList](left: AnnotatedDataFrame[L, LJ]) {
    def join[R, RJ <: JoinList](
        right: AnnotatedDataFrame[R, RJ]
    )(implicit J: Join[L, LJ, R, RJ], P: Prepend[J, RJ]): AnnotatedDataFrame[L, R :: P.Out] =
      J.join(left, right)
  }
}