please include function makeVar.

// test against cases
svoid lambdaMapLike testTranspilationFunction_v1(IVF1<LS> f, S in, S out, S... moreInOut) {
  LS tok = jtok(in);
  makeVar_varCount.set(0);
  f.get(tok);
  assertJavaSourceEqualsVerbose(in, out, tok);
  fOr (PairS p : paramsToPairs(moreInOut))
    testTranspilationFunction_v1(f, p.a, p.b);
}

// just apply and return transpilation
sS testTranspilationFunction_v1(IVF1<LS> f, S s) {
  ret applyTranspilationFunction(f, s);
}

Began life as a copy of #1027849