/** Ensures that an object reference is not null, with an error message. */
public static void checkNotNull(Object reference, String errorMessage) {
checkNotNullInternal(reference, true, errorMessage, EMPTY_ARGUMENTS);
}
/** Ensures that an object reference is not null, with an error message that takes arguments. */
public static void checkNotNull(
Object reference, String errorMessageTemplate, Object... errorMessageArgs) {
checkNotNullInternal(reference, true, errorMessageTemplate, errorMessageArgs);
}
/** Ensures that an object reference is not null. */
public static void checkNotNull(Object reference) {
checkNotNullInternal(reference, true, "Object can not be null.", EMPTY_ARGUMENTS);
}