code: def _mock_lines(size=(1, 1), offset=(0, 0)):
      sub_size = (size[0] / 2, size[1] / 2)
      return [
          elements.Line(_mock_words(size=sub_size, offset=offset)),
          elements.Line(
              _mock_words(
                  size=sub_size,
                  offset=(
                      offset[0] + sub_size[0],
                      offset[1] + sub_size[1],
                  ),
              )
          ),
      ]
  
imports: from xml.etree.ElementTree import ElementTree
  import numpy
  import pytest
  from doctr.file_utils import CLASS_NAME
  from doctr.io import elements
label_desc: Use image node_id 3 for calling a global function with example usage: _mock_lines(size, offset) and returns: list