docstr: @type s string
docstr_tok: ["@","type","s","string"]
code: def slice_from(self, s):
      """
      @type s string
      """
      result = False
      if self.slice_check():
          self.replace_s(self.bra, self.ket, s)
          result = True
      return result
  
label_desc: Use image node_id 19 for calling the BaseStemmer obj's underlying member method code with example usage: obj.slice_from(s) and returns: result