keras/src/initializers/random_initializers.py/TruncatedNormal/__init__
class TruncatedNormal:    def __init__(self, mean=0.0, stddev=0.05, seed=None):
        self.mean = mean
        self.stddev = stddev
        self._init_seed = seed
        self.seed = seed if seed is not None else random.make_default_seed()
        super().__init__()