def instantiate_steady_state_mutable_kwargs(dissolve, block_kwargs, solver_kwargs, constrained_kwargs):
    """Instantiate mutable types from `None` default values in the steady_state function"""
    if dissolve is None:
        dissolve = []
    if block_kwargs is None:
        block_kwargs = {}
    if solver_kwargs is None:
        solver_kwargs = {}
    if constrained_kwargs is None:
        constrained_kwargs = {}

    return dissolve, block_kwargs, solver_kwargs, constrained_kwargs