Add documentation on when to resolve SCT delcared beans.

resolves #491

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/configuration/TaskConfigurer.java

@@ -24,7 +24,10 @@ import org.springframework.transaction.PlatformTransactionManager;
 
 /**
  * Provides a strategy interface for providing configuration
- * customization to the task system.
+ * customization to the task system.  Users should not directly use getter methods
+ * from a TaskConfigurer directly unless they are using it to supply beans in a
+ * class annotated with:
+ * {@link org.springframework.context.annotation.Configuration}.
  *
  * @author Glenn Renfro
  */

spring-cloud-task-docs/src/main/asciidoc/features.adoc

@@ -233,6 +233,10 @@ custom implementation of the `TaskConfigurer` interface. Typically, extending th
 overriding the required getter is sufficient. However, implementing your own from scratch
 may be required.
 
+NOTE: Users should not directly use getter methods from a TaskConfigurer directly
+unless they are using it to supply beans in a class annotated with
+https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/annotation/Configuration.html[Configuration].
+
 [[features-task-name]]
 === Task Name