class_docstr: Asynchronous client.
class_docstr_tok: ["Asynchronous","client","."]
docstr: Gets a callable function for the method that returns a future.
  
  Args:
    method: Name of the method.
  
  Returns:
    Callable function for the method that returns a future.
docstr_tok: ["Gets","a","callable","function","for","the","method","that","returns","a","future",".","Args",":","method",":","Name","of","the","method",".","Returns",":","Callable","function","for","the","method","that","returns","a","future","."]
code: def __getattr__(self, method):
      """Gets a callable function for the method that returns a future.
  
      Args:
        method: Name of the method.
  
      Returns:
        Callable function for the method that returns a future.
      """
      return self._build_handler(method)
  
imports: from concurrent import futures
  import datetime
  from typing import List, Optional, Union
  import zoneinfo
  from courier.python import py_client
  import numpy
  from pybind11_abseil.status import StatusNotOk
  from pybind11_abseil.status import StatusNotOk
label_desc: Use image node_id 3 for calling the _AsyncClient obj's underlying member method code with example usage: obj.__getattr__(method) and returns: self