public static void addKeyVariants(@NotNull GroovyMapContentProvider contentProvider, @NotNull GrExpression qualifier, @Nullable PsiElement resolve, @NotNull CompletionResultSet result) {
    for (String key : contentProvider.getKeyVariants(qualifier, resolve)) {
      LookupElement lookup = LookupElementBuilder.create(key);
      lookup = PrioritizedLookupElement.withPriority(lookup, 1);
      result.addElement(lookup);
    }
  }
public static void addKeyVariants(@NotNull GroovyMapContentProvider contentProvider, @NotNull GrExpression qualifier, @Nullable PsiElement resolve, @NotNull CompletionResultSet result)