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Old JAXB Runtime module. Contains sources required for runtime processing.

There is a newer version: 4.0.5

package com.sun.istack;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;

/**
 * Designates that a field, return value, argument, or a variable is guaranteed to be non-null.
 *
 * @author Kohsuke Kawaguchi
 */
@Documented
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.FIELD,ElementType.METHOD,ElementType.PARAMETER,ElementType.LOCAL_VARIABLE})
public @interface NotNull {
}