'Installs and initializes optimizers. By default we do nothing. Subclass should
override this method if needed.
Parameters
kvstore : str or KVStore
Default `\'local\'`.
optimizer : str or Optimizer
Default `\'sgd\'`
optimizer_params : dict
Default `((\'learning_rate\', 0.01),)`. The default value is not a dictionary,
just to avoid pylint warning of dangerous default values.
force_init : bool
Default `False`, indicating whether we should force re-initializing the
optimizer in the case an optimizer is already installed.'

def init_optimizer(self, kvstore='local', optimizer='sgd', optimizer_params=(('learning_rate', 0.01),), force_init=False):

    pass
