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The Checker Framework enhances Java’s type system to
make it more powerful and useful. This lets software developers
detect and prevent errors in their Java programs.
The Checker Framework includes compiler plug-ins ("checkers")
that find bugs or verify their absence. It also permits you to
write your own compiler plug-ins.
package org.checkerframework.checker.nullness;
import org.checkerframework.common.basetype.BaseTypeChecker;
/**
* A type-checker for determining which which values are keys for which maps.
* Typically used as part of the aggregate checker for the nullness type system.
*
* @checker_framework.manual #map-key-checker Map Key Checker
* @checker_framework.manual #nullness-checker Nullness Checker
*/
public class KeyForSubchecker extends BaseTypeChecker {
}