Update components-binder-load.adoc (#4295)

Improve the documentation of the Binder with a Record class

Author: jcgueriaud1

articles/flow/binding-data/components-binder-load.adoc

@@ -211,18 +211,27 @@ submitButton.addClickListener(event -> {
 
 == Using Java Records with Binder
 
-Instead of using Java Beans, it's possible to use the [classname]`Binder` with Java Records. Since Java Records are immutable, only manual reading and writing can be used when the datatype is a record. This means that methods relying on bean datatypes -- such as `writeBeanAsDraft`, `writeBean`, and `setBean` -- throw an exception when called for a Binder with a record datatype. Additionally, since records can only be read via `readBean`, the `refreshFields` method clears all of the Binder fields.
+Instead of using Java Beans, it's possible to use the [classname]`Binder` with Java Records. Since Java Records are immutable, only manual reading and writing can be used when the datatype is a record. This means that methods relying on bean datatypes -- such as `writeBeanAsDraft`, `writeBean` and `setBean` -- throw an exception when called for a Binder with a record datatype. Additionally, the `refreshFields` method clears all of the Binder fields.
 
-For reading a record, the `readRecord` method should be used as shown in the example below.
+You have to use reflection based on record property names to bind values.
+To use reflection, create a Binder by providing the record class, for example `new Binder<>(Person.class);`.
+You can't bind the field based on setters.
+
+For reading a record, the `readRecord` or `readBean` method should be used as shown in the example below.
 
 [source,java]
 ----
 public record Person(String firstName, String lastName) {}
 
+Binder<Person> binder = new Binder<>(Person.class);
+// Bind based on property names
+binder.bind(firstNameField, "firstName");
+binder.bind(lastNameField, "lastName");
+
 binder.readRecord(new Person("John", "Doe"));
 ----
 
-This method throws an exception, if used with beans.
+The `readRecord` method throws an exception, if used with beans.
 
 For writing a record, the `writeRecord` method should be used. Calling this method applies field and binder level validators, and either returns a new record instance with the current state of the binder, or throws a `ValidationException`.