Issue with parsing 10K filings

[kostadtk]

I am using edgar 5.4.1 to get 10K filings from the SEC database but I cannot parse the html elements and see the actual text content of the documents.
It seems to be the proper way for the 5.4.1 version but it raises an attribute error.

import edgar
company = edgar.Company("Facebook Inc", "0001326801")
tree = company.get_all_filings(filing_type="10-K")
docs = edgar.Company.get_documents(tree=tree, no_of_documents=5, as_documents=True)
sample_text = edgar.TXTML.parse_full_10K(docs[3].element) 
sample_text

I tried another way too, as below, but I think it would work only in a previous version.

import edgar
company = edgar.Company("Facebook Inc", "0001326801")
tree = company.get_all_filings(filing_type="10-K")
docs = edgar.Company.get_documents(tree=tree, no_of_documents=5)
docs[3].element.text_content()

Is there sth I don't get? What is the issue here?

Thanks, in advance!