code: private ExtractionInfo extractBlockComment(JsDocToken token) {
      return extractMultilineComment(token, getWhitespaceOption(WhitespaceOption.TRIM), false, false);
    }
docs: Extracts the top-level block comment from the JsDoc comment, if any.
  This method differs from the extractMultilineTextualBlock in that it
  terminates under different conditions (it doesn't have the same
  prechecks), it does not first read in the remaining of the current
  line and its conditions for ignoring the "*" (STAR) are different.
  
  @param token The starting token.
  
  @return The extraction information.