framework/src/test/java/org/checkerframework/framework/testchecker/util/PatternAB.java

package org.checkerframework.framework.testchecker.util;

import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
import org.checkerframework.framework.qual.QualifierForLiterals;
import org.checkerframework.framework.qual.SubtypeOf;

@SubtypeOf(PatternUnknown.class)
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@QualifierForLiterals(stringPatterns = "^[AB]$")
public @interface PatternAB {}