code: protected void executeSassScript(String sassScript) throws MojoExecutionException, MojoFailureException {
          final Log log = this.getLog();
          System.setProperty("org.jruby.embed.localcontext.scope", "threadsafe");
  
          log.debug("Execute SASS Ruby Script:\n" + sassScript);
  
          final ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
          final ScriptEngine jruby = scriptEngineManager.getEngineByName("jruby");
          try {
              CompilerCallback compilerCallback = new CompilerCallback(log);
              jruby.getBindings(ScriptContext.ENGINE_SCOPE).put("compiler_callback", compilerCallback);
              jruby.eval(sassScript);
              if (failOnError && compilerCallback.hadError()) {
                  throw new MojoFailureException("SASS compilation encountered errors (see above for details).");
              }
          }
          catch (final ScriptException e) {
              throw new MojoExecutionException("Failed to execute SASS ruby script:\n" + sassScript, e);
          }
      }
docs: Execute the SASS Compilation Ruby Script