deserialize method not return a supposed object

[hzyhzy]

tencentcloud-sdk-ruby/tencentcloud-sdk-nlp/lib/v20190408/models.rb

def deserialize(params)
  @FirstClassName = params['FirstClassName']
  @FirstClassProbability = params['FirstClassProbability']
  @SecondClassName = params['SecondClassName']
  @SecondClassProbability = params['SecondClassProbability']
end

this method supposed to return self

def deserialize(params)
  # do anything you want
  self
end