private static @Nullable UsageType deriveUsageTypeFromHighlighting(@NotNull TextAttributesKey @NotNull [] tokenAttributeKeys) {
    if (isHighlightedAsString(tokenAttributeKeys)) {
      return UsageType.LITERAL_USAGE;
    }
    if (isHighlightedAsComment(tokenAttributeKeys)) {
      return UsageType.COMMENT_USAGE;
    }
    return null;
  }
private static @Nullable UsageType deriveUsageTypeFromHighlighting(@NotNull TextAttributesKey @NotNull [] tokenAttributeKeys)