docstr: Return the string bounding box
docstr_tok: ["Return","the","string","bounding","box"]
code: def get_str_bbox(self, s):
      """
      Return the string bounding box
      """
      return self.get_str_bbox_and_descent(s)[:4]
  
imports: import sys, os, re
  from _mathtext_data import uni2type1
label_desc: Use image node_id 5 for calling the AFM obj's underlying member method code with example usage: obj.get_str_bbox(s) and returns: self