code: public static Filter replaceInString(final String regexp, final String replacement) {
          return replaceInString(Pattern.compile(regexp), replacement, DEFAULT_FILTER_OVERLAP);
      }
docs: Equivalent to {@link #replaceInString(java.util.regex.Pattern,
  String)} but takes the regular expression
  as string and default overlap in 80 characters.
  
  @param regexp      the regular expression
  @param replacement the string to be substituted for each match
  @return the filter