class_docstr: Q-function with discrete actions.
  
  Args:
      model (chainer.Link):
          Link that is callable and outputs action values.
class_docstr_tok: ["Q-function","with","discrete","actions",".","Args",":","model","(","chainer.Link",")",":","Link","that","is","callable","and","outputs","action","values","."]
code: def __call__(self, x, a):
      h = self.model(x, a)
      return h
  
imports: import chainer
  from chainer import functions
  from chainer.initializers import LeCunNormal
  from chainer import links
  from chainerrl.links.mlp import MLP
  from chainerrl.links.mlp_bn import MLPBN
  from chainerrl.q_function import StateActionQFunction
  from chainerrl.recurrent import RecurrentChainMixin
label_desc: Use image node_id 2 for calling the SingleModelStateActionQFunction obj's underlying member method code with example usage: obj.__call__(x, a) and returns: h