AttributeError: 'PdfPipelineOptions' object has no attribute 'backend

[raghvender-1205]

Bug

I am getting

AttributeError: 'PdfPipelineOptions' object has no attribute 'backend

when I am trying to run the demo from https://ds4sd.github.io/docling/usage/#control-pdf-table-extraction-options

I am attaching a screenshot of the error

Steps to reproduce

To reproduce the error. Just try running this code below

from docling.datamodel.base_models import InputFormat
from docling.datamodel.pipeline_options import PdfPipelineOptions, TableFormerMode
from docling.document_converter import DocumentConverter
from docling_core.types.doc import TableItem

file = "<your_pdf_file.pdf>"

pipeline_options = PdfPipelineOptions()
pipeline_options.do_table_structure = True
pipeline_options.table_structure_options.do_cell_matching = True
pipeline_options.table_structure_options.mode = TableFormerMode.ACCURATE

doc_converter = DocumentConverter(
    allowed_formats={
        InputFormat.PDF,
        InputFormat.IMAGE
    },
    format_options={
        InputFormat.PDF: PdfPipelineOptions(pipeline_options=pipeline_options)
    }
)
result = doc_converter.convert(file)
print(result.document.export_to_markdown())

Docling version

Docling version: 2.15.1
Docling Core version: 2.14.0
Docling IBM Models version: 3.1.2
Docling Parse version: 3.0.0

Python version

Python 3.11.10