code: def from_meta(cls, meta, meta_all=None):
          
          if len(meta.args) == 2:
              name = meta.args[1]
              meta_type = None
              for x in meta_all:
                  if x.args[1] == name and x.args[0] == 'type':
                      meta_type = x.description
                      break
  
              return cls(args=meta.args, description=meta.description, type=meta_type)
          else:
              return cls(args=meta.args, description=meta.description)
docs: Copy DocstringMeta from another instance.