code: def lint_log_directive(self, rule):
      if not rule.log and not rule.norun and not rule.is_handover:
          yield Lint(
              title="No log directive defined",
              body="Without a log directive, all output will be printed "
              "to the terminal. In distributed environments, this means "
              "that errors are harder to discover. In local environments, "
              "output of concurrent jobs will be mixed and become unreadable.",
              links=[links.log],
          )
  
file_path: snakemake/snakemake/linting/rules.py
imports: from itertools import chain
  import re
  import sys
  from snakemake.io import is_flagged
  from snakemake.linting import Linter, Lint, links, NAME_PATTERN
label_desc: Use image node_id 4 for calling the RuleLinter obj's underlying member method code with example usage: obj.lint_log_directive(rule) without return types