public static FEEL_1_1Parser parse(FEELEventListenersManager eventsManager, String source, Map<String, Type> inputVariableTypes, Map<String, Object> inputVariables, Collection<FEELFunction> additionalFunctions, List<FEELProfile> profiles, FEELTypeRegistry typeRegistry) {
        CharStream input = CharStreams.fromString(source);
        FEEL_1_1Lexer lexer = new FEEL_1_1Lexer( input );
        CommonTokenStream tokens = new CommonTokenStream( lexer );
        FEEL_1_1Parser parser = new FEEL_1_1Parser( tokens );

        ParserHelper parserHelper = new ParserHelper(eventsManager);
        additionalFunctions.forEach(f -> parserHelper.getSymbolTable().getBuiltInScope().define(f.getSymbol()));
        parser.setHelper(parserHelper);
        parser.setErrorHandler( new FEELErrorHandler() );
        parser.removeErrorListeners(); // removes the error listener that prints to the console
        parser.addErrorListener( new FEELParserErrorListener( eventsManager ) );

        // pre-loads the parser with symbols
        defineVariables( inputVariableTypes, inputVariables, parser );
        
        if (typeRegistry != null) {
            parserHelper.setTypeRegistry(typeRegistry);
        }

        return parser;
    }
@Test
    void variableWithInKeyword() {
        String inputExpression = "{ a variable with in keyword : 10, "
                + " another variable : a variable with in keyword + 20, "
                + " another in variable : an external in variable / 2 }";
        BaseNode ctxbase = parse( inputExpression, mapOf(entry("an external in variable", BuiltInType.NUMBER)) );

        assertThat( ctxbase).isInstanceOf(ContextNode.class);
        assertThat( ctxbase.getText()).isEqualTo(inputExpression);

        ContextNode ctx = (ContextNode) ctxbase;
        assertThat( ctx.getEntries()).hasSize(3);

        ContextEntryNode entry = ctx.getEntries().get( 0 );
        assertThat( entry.getName()).isInstanceOf(NameDefNode.class);
        NameDefNode name = (NameDefNode) entry.getName();
        assertThat( name.getParts()).isNotNull();
        assertThat( name.getParts()).hasSize(5);
        assertThat( entry.getName().getText()).isEqualTo("a variable with in keyword");
        assertThat( entry.getValue()).isInstanceOf(NumberNode.class);
        assertThat( entry.getResultType()).isEqualTo(BuiltInType.NUMBER);
        assertThat( entry.getValue().getText()).isEqualTo("10");

        entry = ctx.getEntries().get( 1 );
        assertThat( entry.getName()).isInstanceOf(NameDefNode.class);
        name = (NameDefNode) entry.getName();
        assertThat( name.getParts()).isNotNull();
        assertThat( name.getParts()).hasSize(2);
        assertThat( entry.getName().getText()).isEqualTo("another variable");
        assertThat( entry.getValue()).isInstanceOf(InfixOpNode.class);
        assertThat( entry.getResultType()).isEqualTo(BuiltInType.NUMBER);
        assertThat( entry.getValue().getText()).isEqualTo( "a variable with in keyword + 20");

        entry = ctx.getEntries().get( 2 );
        assertThat( entry.getName()).isInstanceOf(NameDefNode.class);
        name = (NameDefNode) entry.getName();
        assertThat( name.getParts()).isNotNull();
        assertThat( name.getParts()).hasSize(3);
        assertThat( entry.getName().getText()).isEqualTo("another in variable");
        assertThat( entry.getValue()).isInstanceOf(InfixOpNode.class);
        assertThat( entry.getResultType()).isEqualTo(BuiltInType.NUMBER);
        assertThat( entry.getValue().getText()).isEqualTo( "an external in variable / 2");
    }