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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.

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package org.checkerframework.common.util.debug;

import java.util.Set;

import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.TypeElement;

/**
 * This is an annotation processor that does nothing.
 *
 * Use it when you are required to provide an annotation processor, or when you want to debug
 * compiler behavior with an annotation processor present.
 */
@SupportedAnnotationTypes("*")
public class DoNothingProcessor extends AbstractProcessor {

    /** Creates a DoNothingProcessor. */
    public DoNothingProcessor() {}

    @Override
    public boolean process(Set annotations, RoundEnvironment roundEnv) {
        return false;
    }

    @Override
    public SourceVersion getSupportedSourceVersion() {
        return SourceVersion.latest();
    }
}