human
Complete the below
def _AddPropertiesForRepeatedField(field, cls):

    ''''Adds a public property for a "repeated" protocol message field.  Clients
    can use this property to get the value of the field, which will be either a
    _RepeatedScalarFieldContainer or _RepeatedCompositeFieldContainer (see
    below).
    Note that when clients add values to these containers, we perform
    type-checking in the case of repeated scalar fields, and we also set any
    necessary "has" bits as a side-effect.
    Args:
    field: A FieldDescriptor for this field.
    cls: The class we\'re constructing.'
    '''
assistant
#Here is the Python program you requested.
    proto_field_name = field.name
    property_name = _PropertyName(proto_field_name)
    def getter(self):
        field_value = self._fields.get(field)
        if (field_value is None):
            field_value = field._default_constructor(self)
            field_value = self._fields.setdefault(field, field_value)
        return field_value
    getter.__module__ = None
    getter.__doc__ = ('Getter    for    %s.' % proto_field_name)
    def setter(self, new_value):
        raise AttributeError(('Assignment    not    allowed    to    repeated    field    "%s"    in    protocol    message    object.' % proto_field_name))
    doc = ('Magic    attribute    generated    for    "%s"    proto    field.' % proto_field_name)
    setattr(cls, property_name, property(getter, setter, doc=doc))