@Nullable
  @Override
  public JvmType substitute(@NotNull JvmTypeParameter typeParameter) {
    JvmPsiConversionHelper helper = JvmPsiConversionHelper.getInstance(myProject);
    PsiTypeParameter psiTypeParameter = helper.convertTypeParameter(typeParameter);
    return mySubstitutor.substitute(psiTypeParameter);
  }
@Nullable
  @Override
  public JvmType substitute(@NotNull JvmTypeParameter typeParameter)