EXECUTE: create seam project.
EXECUTE: open Authenticator.java
EXECUTE: Add a field: private String foo;
EXECUTE: open components.xml
EXECUTE: add
<component name="authenticator">
<property name="foo">TEST</property>
</component>
EXECUTE: build the project
FAILURE: there is a error mark with message: Class "Authenticator" of component "authenticator" does not contain setter for property "foo".
ASSERT: there is no any error.
EXECTUE: Remove "private String foo;" from Authenticator.java
EXECUTE: build the project
ASSERT: there is the error message "Class "Authenticator" of component "authenticator" does not have a setter or a field for the property "foo" in problems view.