code: def test_init():
      doc = Document()
      assert (
          doc.id
          == "d4675c57fcfe114db0b95f1da46eea3c5d6f5729c17d01fb5251ae19830a3455"
      )
      assert doc.content == None
      assert doc.dataframe == None
      assert doc.blob == None
      assert doc.meta == {}
      assert doc.score == None
      assert doc.embedding == None
  
imports: import pandas
  import pytest
  from haystack import Document
  from haystack.dataclasses.byte_stream import ByteStream
label_desc: Use image node_id 2 for calling a global function with example usage: test_init() without return types