def __call__(self, io_loop=None):
    if io_loop is not None:
      assert io_loop is self.io_loop
    return self
Expose this in template using the template naming convention.
dataset/ETHPy150Open viewfinderco/viewfinder/backend/base/testing.py/MockAsyncHTTPClient.__call__--crossover with--dataset/ETHPy150Open google/apis-client-generator/src/googleapis/codegen/template_objects.py/CodeObject.safeCodeType