public static void writeImplements(
    PsiClass aClass,
    StringBuilder buffer,
    PsiClassType[] refs,
    JavaDocHighlightingManager highlightingManager
  ) {
    if (refs.length > 0) {
      newLine(buffer);
      appendStyledSignatureFragment(buffer, "implements ", highlightingManager.getKeywordAttributes()); // <- Groovy keyword
      writeTypeRefs(aClass, buffer, refs, highlightingManager);
    }
  }
public static void writeImplements(
    PsiClass aClass,
    StringBuilder buffer,
    PsiClassType[] refs,
    JavaDocHighlightingManager highlightingManager
  )