code: def test_2369():
      width, height = 13, 37
      image = fitz.Pixmap(
          fitz.csGRAY, width, height, b"\x00" * (width * height), False
      )
  
      with fitz.Document(
          stream=image.tobytes(output="pam"), filetype="pam"
      ) as doc:
          test_pdf_bytes = doc.convert_to_pdf()
  
      with fitz.Document(stream=test_pdf_bytes) as doc:
          page = doc[0]
          img_xref = page.get_images()[0][0]
          img = doc.extract_image(img_xref)
          img_bytes = img["image"]
          fitz.Pixmap(img_bytes)
  
file_path: pymudf/tests/test_pixmap.py
imports: import fitz
  import os
  import platform
  import sys
  import tempfile
  import pytest
label_desc: Use image node_id 10 for calling a global function with example usage: test_2369() without return types