protected BlockStmt fieldAssignment(String fieldName, String valueName) {
        BlockStmt body = new BlockStmt();
        body.addStatement(
                new ExpressionStmt(new AssignExpr(new NameExpr(fieldName), new NameExpr(valueName), Operator.ASSIGN)));
        return body;
    }
Generates something like <code>field = newValue</code>
jctools-build/src/main/java/org/jctools/queues/atomic/JavaParsingAtomicQueueGenerator.java