class_docstr: Class that represents a function application category.
  Consists of argument and result categories, together with
  an application direction.
class_docstr_tok: ["Class","that","represents","a","function","application","category",".","Consists","of","argument","and","result","categories",",","together","with","an","application","direction","."]
code: def res(self):
      return self._res
  
imports: from abc import ABCMeta, abstractmethod
  from functools import total_ordering
  from nltk.internals import raise_unorderable_types
label_desc: Use image node_id 8 for calling the FunctionalCategory obj's underlying member method code with example usage: obj.res() and returns: self