keras/src/layers/reshaping/up_sampling3d.py/UpSampling3D/__init__
class UpSampling3D:    def __init__(self, size=(2, 2, 2), data_format=None, **kwargs):
        super().__init__(**kwargs)
        self.data_format = backend.standardize_data_format(data_format)
        self.size = argument_validation.standardize_tuple(size, 3, "size")
        self.input_spec = InputSpec(ndim=5)