GuiSim

import java.util.function.Function;

import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;

public class LambdaMatcher<T> extends BaseMatcher<T>
{
    private final Function<T, Boolean> matcher;
    private final String description;

GuiSim

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>controls</key>
	<array>
		<dict>
			<key>controlType</key>
			<string>button</string>
			<key>keyPath</key>