code: def build_phoc(token):
      token = token.lower().strip()
      token = "".join([c for c in token if c in _alphabet])
      phoc = _build_phoc_raw(token)
      phoc = np.array(phoc, dtype=np.float32)
      return phoc
  
label_desc: Use image node_id 1 for calling a global function with example usage: build_phoc(token) and returns: phoc