---
upgrade:
  - |
    The deprecated `converter_name` parameter has been removed from `PyPDFToDocument`.

    To specify a custom converter for `PyPDFToDocument`, use the `converter` initialization parameter and
    pass an instance of a class that implements the `PyPDFConverter` protocol.

    The `PyPDFConverter` protocol defines the methods `convert`, `to_dict` and `from_dict`.
    A default implementation of `PyPDFConverter` is provided in the `DefaultConverter` class.