HSEARCH-3135 Allow passing the value/identifier bridge instance direc…

…tly in the programmatic mapping

Because it's easier, and because value bridges are immutable anyway, so
there's nothing wrong with re-using the same instances in multiple
places of the mapping (e.g. a parent class and its child class).

This will help making examples clearer in the next commits.

mapper/pojo-base/src/main/java/org/hibernate/search/mapper/pojo/mapping/definition/programmatic/PropertyMappingDocumentIdOptionsStep.java

@@ -31,6 +31,15 @@ public interface PropertyMappingDocumentIdOptionsStep extends PropertyMappingSte
 	 */
 	PropertyMappingDocumentIdOptionsStep identifierBridge(BeanReference<? extends IdentifierBridge<?>> bridgeReference);
 
+	/**
+	 * @param bridgeInstance A bridge instance to use.
+	 * @return {@code this}, for method chaining.
+	 * @see IdentifierBridge
+	 */
+	default PropertyMappingDocumentIdOptionsStep identifierBridge(IdentifierBridge<?> bridgeInstance) {
+		return identifierBridge( BeanReference.ofInstance( bridgeInstance ) );
+	}
+
 	/**
 	 * @param binder A {@link IdentifierBinder} responsible for creating a bridge.
 	 * @return {@code this}, for method chaining.

mapper/pojo-base/src/main/java/org/hibernate/search/mapper/pojo/mapping/definition/programmatic/PropertyMappingFieldOptionsStep.java

@@ -36,6 +36,15 @@ public interface PropertyMappingFieldOptionsStep<S extends PropertyMappingFieldO
 	 */
 	S valueBridge(BeanReference<? extends ValueBridge<?, ?>> bridgeReference);
 
+	/**
+	 * @param bridgeInstance The bridge instance to use.
+	 * @return {@code this}, for method chaining.
+	 * @see GenericField#valueBridge()
+	 */
+	default S valueBridge(ValueBridge<?, ?> bridgeInstance) {
+		return valueBridge( BeanReference.ofInstance( bridgeInstance ) );
+	}
+
 	/**
 	 * @param binder A {@link ValueBinder} responsible for creating a bridge.
 	 * @return {@code this}, for method chaining.