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Checker Qual is the set of annotations (qualifiers) and supporting classes
used by the Checker Framework to type check Java source code. Please
see artifact:
org.checkerframework:checker
package org.checkerframework.common.value.qual;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.checkerframework.framework.qual.SubtypeOf;
/**
* An annotation indicating the possible values for a String type.
* If an expression's type has this annotation, then at run time, the
* expression evaluates to one of the annotation's arguments.
*
* @checker_framework.manual #constant-value-checker Constant Value Checker
*/
@SubtypeOf({ UnknownVal.class })
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.TYPE_PARAMETER, ElementType.TYPE_USE })
public @interface StringVal {
String[] value();
}