.filter(it -> it.getTokenKind() == kind)

    protected int getTokenKind() {
        return antlrNode.symbol.getTokenIndex();
    }

        String code = "class Foo { fun foo() { var a = 42; a += 1 } }";

        // Parse using KotlinParsingHelper
        KtKotlinFile root = KotlinParsingHelper.DEFAULT.parse(code);

        assertNotNull(root);

        // Traverse to the first function declaration in the file
        KtFunctionDeclaration fn = root.descendants(KtFunctionDeclaration.class).first();
        assertNotNull(fn, "Expected a function declaration in the parsed Kotlin file");

        // Find the first KtAssignmentAndOperator node within the function body
        KtAssignmentAndOperator idNode = fn.descendants(KtAssignmentAndOperator.class).first();
        assertNotNull(idNode, "Expected a assignmentAndOperator within the function node");
        // Call the generated accessor that returns the ADD_ASSIGNMENT terminal node.
        // This calls getToken/getTokens under the hood and will exercise
        // BaseAntlrInnerNode#getToken(s).
        TerminalNode tn = idNode.ADD_ASSIGNMENT();
        assertNotNull(tn, "Expected an ADD_ASSIGNMENT terminal node");
        assertEquals("+=", tn.getText());
        assertEquals(ADD_ASSIGNMENT, tn.getSymbol().getType());