@NotNull
  private static Equations convertEquations(EKey methodKey, List<Equation> rawMethodEquations) {
    List<DirectionResultPair> compressedMethodEquations =
      ContainerUtil.map(rawMethodEquations, equation -> new DirectionResultPair(equation.key.dirKey, equation.result));
    return new Equations(compressedMethodEquations, methodKey.stable);
  }
@NotNull
  private static Equations convertEquations(EKey methodKey, List<Equation> rawMethodEquations)