public SpringELExpressionParser getSpringExpressionParser() {
        val configuration = new SpelParserConfiguration();
        val spelExpressionParser = new SpelExpressionParser(configuration);
        val parser = new SpringELExpressionParser(spelExpressionParser, this.flowBuilderServices.getConversionService());
        parser.addPropertyAccessor(new ActionPropertyAccessor());
        parser.addPropertyAccessor(new BeanFactoryPropertyAccessor());
        parser.addPropertyAccessor(new FlowVariablePropertyAccessor());
        parser.addPropertyAccessor(new MapAdaptablePropertyAccessor());
        parser.addPropertyAccessor(new MessageSourcePropertyAccessor());
        parser.addPropertyAccessor(new ScopeSearchingPropertyAccessor());
        parser.addPropertyAccessor(new BeanExpressionContextAccessor());
        parser.addPropertyAccessor(new MapAccessor());
        parser.addPropertyAccessor(new MapAdaptablePropertyAccessor());
        parser.addPropertyAccessor(new EnvironmentAccessor());
        parser.addPropertyAccessor(new ReflectivePropertyAccessor());
        return parser;
    }
public SpringELExpressionParser getSpringExpressionParser ( ) { val configuration = new SpelParserConfiguration ( ) ; val spelExpressionParser = new SpelExpressionParser ( configuration ) ; val parser = new SpringELExpressionParser ( spelExpressionParser , this . flowBuilderServices . getConversionService ( ) ) ; parser . addPropertyAccessor ( new ActionPropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new BeanFactoryPropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new FlowVariablePropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new MapAdaptablePropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new MessageSourcePropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new ScopeSearchingPropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new BeanExpressionContextAccessor ( ) ) ; parser . addPropertyAccessor ( new MapAccessor ( ) ) ; parser . addPropertyAccessor ( new MapAdaptablePropertyAccessor ( ) ) ; parser . addPropertyAccessor ( new EnvironmentAccessor ( ) ) ; parser . addPropertyAccessor ( new ReflectivePropertyAccessor ( ) ) ; return parser ; }
Gets spring expression parser.

@return the spring expression parser