static LinkedHashSet<String> suggestNames(GrVariable var,
                                            GrExpression expr,
                                            StringPartInfo stringPart,
                                            GrParameterListOwner scope,
                                            Project project) {
    if (expr != null) {
      final GrIntroduceContext
        introduceContext = new GrIntroduceContextImpl(project, null, expr, var, stringPart, PsiElement.EMPTY_ARRAY, scope);
      final GroovyFieldValidator validator = new GroovyFieldValidator(introduceContext);
      return new LinkedHashSet<>(Arrays.asList(GroovyNameSuggestionUtil.suggestVariableNames(expr, validator, true)));
    }
    else if (var != null) {
      final GrIntroduceContext introduceContext = new GrIntroduceContextImpl(project, null, expr, var, stringPart, PsiElement.EMPTY_ARRAY, scope);
      final GroovyFieldValidator validator = new GroovyFieldValidator(introduceContext);
      LinkedHashSet<String> names = new LinkedHashSet<>();
      names.add(var.getName());
      ContainerUtil.addAll(names, GroovyNameSuggestionUtil.suggestVariableNameByType(var.getType(), validator));
      return names;
    }
    else {
      LinkedHashSet<String> names = new LinkedHashSet<>();
      names.add("closure");
      return names;
    }
  }
static LinkedHashSet<String> suggestNames(GrVariable var,
                                            GrExpression expr,
                                            StringPartInfo stringPart,
                                            GrParameterListOwner scope,
                                            Project project)