How to use the ipykernel.pickleutil.CannedObject function in ipykernel

We only handle data asked by Spyder, in case people use
        publish_data for other purposes.
        """
        # Deserialize data
        try:
            data = deserialize_object(msg['buffers'])[0]
        except Exception as msg:
            self._kernel_value = None
            self._kernel_reply = repr(msg)
            self.sig_got_reply.emit()
            return

        # Receive values asked for Spyder
        value = data.get('__spy_data__', None)
        if value is not None:
            if isinstance(value, CannedObject):
                value = value.get_object()
            self._kernel_value = value
            self.sig_got_reply.emit()
            return

        # Receive Pdb state and dispatch it
        pdb_state = data.get('__spy_pdb_state__', None)
        if pdb_state is not None and isinstance(pdb_state, dict):
            self.refresh_from_pdb(pdb_state)

# These dicts can be extended for custom serialization of new objects

can_map = {
    'numpy.ndarray' : CannedArray,
    FunctionType : CannedFunction,
    bytes : CannedBytes,
    memoryview : CannedMemoryView,
    cell_type : CannedCell,
    class_type : can_class,
}
if buffer is not memoryview:
    can_map[buffer] = CannedBuffer

uncan_map = {
    CannedObject : lambda obj, g: obj.get_object(g),
    dict : uncan_dict,
}

# for use in _import_mapping:
_original_can_map = can_map.copy()
_original_uncan_map = uncan_map.copy()

def _restore_buffers(obj, buffers):
    """restore buffers extracted by """
    if isinstance(obj, CannedObject) and obj.buffers:
        for i,buf in enumerate(obj.buffers):
            if buf is None:
                obj.buffers[i] = buffers.pop(0)

return eval(self.name, g)


class CannedCell(CannedObject):
    """Can a closure cell"""
    def __init__(self, cell):
        self.cell_contents = can(cell.cell_contents)
    
    def get_object(self, g=None):
        cell_contents = uncan(self.cell_contents, g)
        def inner():
            return cell_contents
        return py3compat.get_closure(inner)[0]


class CannedFunction(CannedObject):

    def __init__(self, f):
        self._check_type(f)
        self.code = f.__code__
        if f.__defaults__:
            self.defaults = [ can(fd) for fd in f.__defaults__ ]
        else:
            self.defaults = None
        
        closure = py3compat.get_closure(f)
        if closure:
            self.closure = tuple( can(cell) for cell in closure )
        else:
            self.closure = None
        
        self.module = f.__module__ or '__main__'

def can_dependent(obj):
    return CannedObject(obj, keys=('f', 'df'), hook=_uncan_dependent_hook)

def get_object(self, g=None):
        from numpy import frombuffer
        data = self.buffers[0]
        if self.pickled:
            # we just pickled it
            return pickle.loads(buffer_to_bytes_py2(data))
        else:
            if not py3compat.PY3 and isinstance(data, memoryview):
                # frombuffer doesn't accept memoryviews on Python 2,
                # so cast to old-style buffer
                data = buffer(data.tobytes())
            return frombuffer(data, dtype=self.dtype).reshape(self.shape)


class CannedBytes(CannedObject):
    wrap = staticmethod(buffer_to_bytes)

    def __init__(self, obj):
        self.buffers = [obj]
    
    def get_object(self, g=None):
        data = self.buffers[0]
        return self.wrap(data)

class CannedBuffer(CannedBytes):
    wrap = buffer

class CannedMemoryView(CannedBytes):
    wrap = memoryview

#-------------------------------------------------------------------------------

g = sys.modules[self.module].__dict__

        if g is None:
            g = {}
        if self.defaults:
            defaults = tuple(uncan(cfd, g) for cfd in self.defaults)
        else:
            defaults = None
        if self.closure:
            closure = tuple(uncan(cell, g) for cell in self.closure)
        else:
            closure = None
        newFunc = FunctionType(self.code, g, self.__name__, defaults, closure)
        return newFunc

class CannedClass(CannedObject):

    def __init__(self, cls):
        self._check_type(cls)
        self.name = cls.__name__
        self.old_style = not isinstance(cls, type)
        self._canned_dict = {}
        for k,v in cls.__dict__.items():
            if k not in ('__weakref__', '__dict__'):
                self._canned_dict[k] = can(v)
        if self.old_style:
            mro = []
        else:
            mro = cls.mro()
        
        self.parents = [ can(c) for c in mro[1:] ]
        self.buffers = []

if not isinstance(name, string_types):
            raise TypeError("illegal name: %r"%name)
        self.name = name
        self.buffers = []

    def __repr__(self):
        return ""%self.name

    def get_object(self, g=None):
        if g is None:
            g = {}
        
        return eval(self.name, g)


class CannedCell(CannedObject):
    """Can a closure cell"""
    def __init__(self, cell):
        self.cell_contents = can(cell.cell_contents)
    
    def get_object(self, g=None):
        cell_contents = uncan(self.cell_contents, g)
        def inner():
            return cell_contents
        return py3compat.get_closure(inner)[0]


class CannedFunction(CannedObject):

    def __init__(self, f):
        self._check_type(f)
        self.code = f.__code__

if self.old_style:
            mro = []
        else:
            mro = cls.mro()
        
        self.parents = [ can(c) for c in mro[1:] ]
        self.buffers = []

    def _check_type(self, obj):
        assert isinstance(obj, class_type), "Not a class type"

    def get_object(self, g=None):
        parents = tuple(uncan(p, g) for p in self.parents)
        return type(self.name, parents, uncan_dict(self._canned_dict, g=g))

class CannedArray(CannedObject):
    def __init__(self, obj):
        from numpy import ascontiguousarray
        self.shape = obj.shape
        self.dtype = obj.dtype.descr if obj.dtype.fields else obj.dtype.str
        self.pickled = False
        if sum(obj.shape) == 0:
            self.pickled = True
        elif obj.dtype == 'O':
            # can't handle object dtype with buffer approach
            self.pickled = True
        elif obj.dtype.fields and any(dt == 'O' for dt,sz in obj.dtype.fields.values()):
            self.pickled = True
        if self.pickled:
            # just pickle it
            self.buffers = [pickle.dumps(obj, PICKLE_PROTOCOL)]
        else: