code: function getCommentAt(message, sourceCode) {
      if (sourceCode != null) {
          const loc = { line: message.line, column: message.column - 1 }
          const index = sourceCode.getIndexFromLoc(loc)
          const options = { includeComments: true }
          const comment = sourceCode.getTokenByRangeStart(index, options)
          if (
              comment != null &&
              (comment.type === "Line" || comment.type === "Block")
          ) {
              return comment
          }
      }
      return undefined
  }
docs: Get the comment which is at a given message location.
  @param {Message} message The message to get.
  @param {SourceCode|undefined} sourceCode The source code object to get.
  @returns {Comment|undefined} The gotten comment.