"""C4: C3 with bounded source attention and a null source."""
from .crg import CRG


class C4(CRG):
    def __init__(self, **kwargs):
        super().__init__(use_imputer=True, use_joint_draws=True,
                         use_final_gate=True, use_source_attention=True,
                         reliability_update=False, use_low_rank=False, **kwargs)