Args:
        role: Filter by member role — "all", "admin", or "member" (default: "all").
        filter: Filter members — "all" or "2fa_disabled" (default: "all").
        per_page: Results per page, max 100 (default: 30).
        page: Page number of the results to fetch (default: 1).
    

    Args:
        username: The GitHub handle of the user to look up.
    

    If the user is not yet a member, GitHub sends an invitation (state "pending");
    if they already are a member, their role is updated.

    Args:
        username: The GitHub handle of the user to add or update.
        role: Role to assign — "member" or "admin" (default: "member").
    

    Removing a member also removes them from all teams and revokes their
    access to organization repositories.

    Args:
        username: The GitHub handle of the user to remove.
    

    Args:
        per_page: Results per page, max 100 (default: 30).
        page: Page number of the results to fetch (default: 1).
    

    Exactly one of invitee_id or email must be provided.

    Args:
        invitee_id: GitHub numeric user ID of the person to invite.
        email: Email address of the person to invite (for users without a known ID).
        role: Invitee role — "direct_member", "admin", or "billing_manager"
            (default: "direct_member").
        team_ids: Optional list of team IDs to add the invitee to.
    

    Args:
        invitation_id: The numeric ID of the invitation to cancel
            (from github_list_org_invitations).