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* CruiseControl, a Continuous Integration Toolkit
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package net.sourceforge.cruisecontrol.gendoc.annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* <p>Specifies the cardinality of an attribute of a plugin. This is shorthand for
* <code>@Cardinality(min = 0, max = 1)</code>. Also allows an optional, supplemental
* description to be supplied. This description can be used to justify or qualify
* the specified cardinality.</p>
*
* <p>Applies to: Attribute setter method.</p>
*
* @author Seth Pollen (pollens@msoe.edu)
* @see Cardinality
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Optional {
/** @return An optional, supplemental note explaining this cardinality. */
String value() default "";
}