static new Map<S, Font> loadFont_cached_cache;

static synchronized Font loadFont_cached(S snippetID) ctex {
  snippetID = formatSnippetID(snippetID);
  Font f = loadFont_cached_cache.get(snippetID);
  if (f == null)
    loadFont_cached_cache.put(snippetID, f = loadFont(snippetID, 12f));
  ret f;
}

static synchronized Font loadFont_cached(S snippetID, float size) ctex {
  ret loadFont_cached(snippetID).deriveFont(size);
}

Began life as a copy of #1000994