code: def type_search(self, basetype, symbolstr):
          
          return self.parent.type_search(basetype, symbolstr, self)
docs: Recursively traverses the module trees looking for the final
          code element in a sequence of %-separated symbols.
  
          :arg basetype: the type name of the first element in the symbol string.
          :arg symblstr: a %-separated list of symbols, e.g. this%sym%sym2%go.