langchain/document_loaders/github.py/GitHubIssuesLoader/lazy_load
class GitHubIssuesLoader:    def lazy_load(self) -> Iterator[Document]:
        """
        Get issues of a GitHub repository.

        Returns:
            A list of Documents with attributes:
                - page_content
                - metadata
                    - url
                    - title
                    - creator
                    - created_at
                    - last_update_time
                    - closed_time
                    - number of comments
                    - state
                    - labels
                    - assignee
                    - assignees
                    - milestone
                    - locked
                    - number
                    - is_pull_request
        """
        url: Optional[str] = self.url
        while url:
            response = requests.get(url, headers=self.headers)
            response.raise_for_status()
            issues = response.json()
            for issue in issues:
                doc = self.parse_issue(issue)
                if not self.include_prs and doc.metadata["is_pull_request"]:
                    continue
                yield doc
            if response.links and response.links.get("next"):
                url = response.links["next"]["url"]
            else:
                url = None