code: def location_(self):
      column = self.pos_ - self.line_start_ + 1
      return FeatureLibLocation(
          self.filename_ or "<features>", self.line_, column
      )
  
imports: from fontTools.feaLib.error import FeatureLibError, IncludedFeaNotFound
  from fontTools.feaLib.location import FeatureLibLocation
  import re
  import os
label_desc: Use image node_id 5 for calling the Lexer obj's underlying member method code with example usage: obj.location_() and returns: FeatureLibLocation