docs: def get_property(self):
          """
          Returns the property of the variable
  
          Example
          -------------
          >>> from pgmpy.readwrite import BIFReader
          >>> reader = BIFReader("bif_test.bif")
          >>> reader.get_property()
          {'bowel-problem': ['position = (335, 99)'],
          'dog-out': ['position = (300, 195)'],
          'family-out': ['position = (257, 99)'],
          'hear-bark': ['position = (296, 268)'],
          'light-on': ['position = (218, 195)']}
          """
          variable_properties = {}
          for block in self.variable_block():
              name = self.name_expr.searchString(block)[0][0]
              properties = self.property_expr.searchString(block)
              variable_properties[name] = [y.strip() for x in properties for y in x]
          return variable_properties