In Policy limitation Ibexa Migration Bundle uses content type ID (int) for the ParentClass limitation instead of identifier (string) as it was in Kaliop Migration Bundle.

I think that it is slightly inconvenient to use ID (int) rather than Identifier (string)

Example:

Kaliop Migration Bundle:

-

    type: role

    mode: create

    name: 'Content editor'

    policies:

                -

                            module: content

                            function: read

                            limitations:

                                        -

                                            identifier: Class

                                            values:

                                                        - market

                                        -

                                            identifier: ParentClass

                                            values:

                                                         - market_container

    step: 3

Ibexa Migration Bundle:

-

    type: role

    mode: create

    metadata:

                identifier: 'Content editor'

    policies:

                -

                            module: content

                            function: read

                            limitations:

                                -

                                            identifier: Class

                                            values:

                                                        - market

                                 -

                                            identifier: ParentClass

                                            values:

                                                        - 237

    step: 3