code: public static boolean requireIfAvailable(Ruby ruby, String requirement, boolean logErrors) {
          boolean success = false;
          try {
              StringBuilder script = new StringBuilder();
              script.append("require %q(");
              script.append(requirement);
              script.append(")\n");
              evalScriptlet( ruby, script.toString(), false );
              success = true;
          } catch (Throwable t) {
              success = false;
              if (logErrors) {
                  log.debug( "Error encountered. Unable to require file: " + requirement, t );
              }
          }
          return success;
      }
docs: Calls "require 'requirement'" in the Ruby provided.
  @return boolean If successful, returns true, otherwise false.