How to use Require.StateChecker class of org.openqa.selenium.internal package

Best Selenium code snippet using org.openqa.selenium.internal.Require.StateChecker

Require.StateChecker

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1import org.openqa.selenium.internal.Require;2public class StateChecker {3    private final String name;4    private final String message;5    public StateChecker(String name) {6        this.name = name;7        this.message = "StateChecker for " + name;8    }9    public void isTrue(boolean condition, String message) {10        if (!condition) {11            throw new IllegalStateException(message);12        }13    }14    public void isTrue(boolean condition) {15        isTrue(condition, message);16    }17    public void isFalse(boolean condition, String message) {18        if (condition) {19            throw new IllegalStateException(message);20        }21    }22    public void isFalse(boolean condition) {23        isFalse(condition, message);24    }25    public void isNotNull(Object object, String message) {26        if (object == null) {27            throw new IllegalStateException(message);28        }29    }30    public void isNotNull(Object object) {31        isNotNull(object, message);32    }33    public void isNull(Object object, String message) {34        if (object != null) {35            throw new IllegalStateException(message);36        }37    }38    public void isNull(Object object) {39        isNull(object, message);40    }41    public void notEquals(Object actual, Object expected, String message) {42        if (actual == null) {43            if (expected == null) {44                throw new IllegalStateException(message);45            }46            return;47        }48        if (actual.equals(expected)) {49            throw new IllegalStateException(message);50        }51    }52    public void notEquals(Object actual, Object expected) {53        notEquals(actual, expected, message);54    }55    public void equals(Object actual, Object expected, String message) {56        if (actual == null) {57            if (expected == null) {58                return;59            }60            throw new IllegalStateException(message);61        }62        if (!actual.equals(expected)) {63            throw new IllegalStateException(message);64        }65    }66    public void equals(Object actual, Object expected) {67        equals(actual, expected, message);68    }69}70import org.openqa.selenium.internal.Require;71public class Require {72    public static StateChecker state() {73        return new StateChecker("unknown");74    }75    public static StateChecker state(String name) {76        return new StateChecker(name);77    }78}79import org.openqa.selenium.internal.Require;80public class Require {

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