code: def build_default_pretrains(default_treebanks):
      default_pretrains = dict(default_treebanks)
      for lang in no_pretrain_languages:
          default_pretrains.pop(lang, None)
      for lang in specific_default_pretrains.keys():
          default_pretrains[lang] = specific_default_pretrains[lang]
      return default_pretrains
  
label_desc: Use image node_id 1 for calling a global function with example usage: build_default_pretrains(default_treebanks) and returns: default_pretrains