diff --git a/build.gradle.kts b/build.gradle.kts
index c85b415..8d576a1 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -65,7 +65,7 @@ xomrk {
 			val commonMain by getting {
 				dependencies {
 					implementation(kotlinStdlibDependency)
-					implementation("ru.landgrafhomyak.utility:highlevel-try-finally:0.5")
+					implementation("ru.landgrafhomyak.utility:highlevel-try-finally:0.6")
 				}
 			}
 			val commonTest by getting {
diff --git a/highlevel-try-finally b/highlevel-try-finally
index 099c3fa..6cfa6bd 160000
--- a/highlevel-try-finally
+++ b/highlevel-try-finally
@@ -1 +1 @@
-Subproject commit 099c3fad269770649d5a67acd3cd07e378bc9f37
+Subproject commit 6cfa6bddd04a041ae02ec8098c478762313c71de
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt
index bf7821b..26c27d5 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt
@@ -1,40 +1,26 @@
 package ru.landgrafhomyak.utility.closeable_state_1
 
-public class CloseableStateCloseableWrapper(
-	private val _parent: CloseableState.ExternallySynchronized,
-	private val _self: CloseableState.ExternallySynchronized
-) : CloseableState.ExternallySynchronized {
+public expect class CloseableStateCloseableWrapper : CloseableState.ExternallySynchronized {
 
-	override val isInUse: Boolean by this._self::isInUse
+	public constructor(parent: CloseableState.ExternallySynchronized, self: CloseableState.ExternallySynchronized)
 
-	override val isClosed: Boolean by this._self::isInUse
+	override val isInUse: Boolean
 
-	override fun assertNotClosed(): Unit =
-		this._self.assertNotClosed()
+	override val isClosed: Boolean
+
+	override fun assertNotClosed()
 
 	@ManualStateManipulation
-	override fun startUsage() {
-		this._self.tryStartUsage {
-			this._parent.startUsage()
-		}
-	}
+	override fun startUsage()
 
 	@ManualStateManipulation
-	override fun finishUsage() {
-		this._self.tryFinishUsage {
-			this._parent.finishUsage()
-		}
-	}
+	override fun finishUsage()
 
 	@ManualStateManipulation
-	override fun finishUsage(close: Boolean) {
-		this._self.tryFinishUsageThenClose(close) {
-			this._parent.finishUsage()
-		}
-	}
+	override fun finishUsage(close: Boolean)
 
 	@ManualStateManipulation
-	override fun close() {
-		this._self.close()
-	}
+	override fun close()
+
+	override fun toString(): String
 }
\ No newline at end of file
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/usage_scopes.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/usage_scopes.kt
index b27b403..b71e00c 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/usage_scopes.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/usage_scopes.kt
@@ -51,7 +51,6 @@ public inline fun <R> CloseableState.tryFinishUsage(block: () -> R): R {
 	contract {
 		callsInPlace(block, InvocationKind.EXACTLY_ONCE)
 	}
-	this.assertNotClosed()
 	return safeAutoClose2(action = block, onSuccess = this::finishUsage)
 }
 
@@ -76,7 +75,6 @@ public inline fun <R> CloseableState.ExternallySynchronized.tryFinishUsageThenCl
 	contract {
 		callsInPlace(block, InvocationKind.EXACTLY_ONCE)
 	}
-	this.assertNotClosed()
 	return safeAutoClose2(action = block, onSuccess = { this.finishUsage(close) })
 }
 
@@ -86,7 +84,6 @@ public inline fun CloseableState.ExternallySynchronized.tryFinishUsageThenClose(
 	contract {
 		callsInPlace(block, InvocationKind.EXACTLY_ONCE)
 	}
-	this.assertNotClosed()
 	var needClose = false
 	return safeAutoClose2(
 		action = { needClose = block() },
diff --git a/src/jvmMain/java/ru/landgrafhomyak/utility/closeable_state_1/jCloseableStateCloseableWrapper.java b/src/jvmMain/java/ru/landgrafhomyak/utility/closeable_state_1/jCloseableStateCloseableWrapper.java
new file mode 100644
index 0000000..6bbfa21
--- /dev/null
+++ b/src/jvmMain/java/ru/landgrafhomyak/utility/closeable_state_1/jCloseableStateCloseableWrapper.java
@@ -0,0 +1,70 @@
+package ru.landgrafhomyak.utility.closeable_state_1;
+
+
+import java.util.Objects;
+
+public final class jCloseableStateCloseableWrapper
+		implements CloseableState.ExternallySynchronized {
+	private final CloseableState.ExternallySynchronized _parent;
+	private final CloseableState.ExternallySynchronized _self;
+
+	public jCloseableStateCloseableWrapper(CloseableState.ExternallySynchronized parent, CloseableState.ExternallySynchronized self) {
+		Objects.requireNonNull(parent, "param: parent");
+		Objects.requireNonNull(self, "param: self");
+		this._parent = parent;
+		this._self = self;
+	}
+
+
+	@Override
+	public boolean isInUse() {
+		return this._self.isInUse();
+	}
+
+	@Override
+	public boolean isClosed() {
+		return this._self.isClosed();
+	}
+
+	@Override
+	public void assertNotClosed() {
+		this._self.assertNotClosed();
+	}
+
+	@Override
+	public void startUsage() {
+		this._self.startUsage();
+		try {
+			this._parent.startUsage();
+		} catch (Throwable e1) {
+			try {
+				this._self.finishUsage();
+			} catch (Throwable e2) {
+				e1.addSuppressed(e2);
+			}
+			throw e1;
+		}
+	}
+
+	@Override
+	public void finishUsage() {
+		this._parent.finishUsage();
+		this._self.finishUsage();
+	}
+
+	@Override
+	public void finishUsage(boolean close) {
+		this._parent.finishUsage();
+		this._self.finishUsage(close);
+	}
+
+	@Override
+	public void close() {
+		this._self.close();
+	}
+
+	@Override
+	public String toString() {
+		return "<closeable state " + this._parent + " wrapped with " + this._self + ">";
+	}
+}
diff --git a/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt b/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt
new file mode 100644
index 0000000..63889ff
--- /dev/null
+++ b/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/CloseableStateCloseableWrapper.kt
@@ -0,0 +1,57 @@
+package ru.landgrafhomyak.utility.closeable_state_1
+
+public actual class CloseableStateCloseableWrapper : CloseableState.ExternallySynchronized {
+	private val _parent: CloseableState.ExternallySynchronized
+	private val _self: CloseableState.ExternallySynchronized
+
+	public actual constructor(
+		parent: CloseableState.ExternallySynchronized,
+		self: CloseableState.ExternallySynchronized,
+	) {
+		this._parent = parent
+		this._self = self
+	}
+
+	actual override val isInUse: Boolean
+		get() = this._self.isInUse
+
+	actual override val isClosed: Boolean
+		get() = this._self.isClosed
+
+	actual override fun assertNotClosed(): Unit =
+		this._self.assertNotClosed()
+
+	@ManualStateManipulation
+	actual override fun startUsage() {
+		this._self.startUsage()
+		try {
+			this._parent.startUsage()
+		} catch (e1: Throwable) {
+			try {
+				this._self.finishUsage()
+			} catch (e2: Throwable) {
+				e1.addSuppressed(e2)
+			}
+			throw e1
+		}
+	}
+
+	@ManualStateManipulation
+	actual override fun finishUsage() {
+		this._parent.finishUsage()
+		this._self.finishUsage()
+	}
+
+	@ManualStateManipulation
+	actual override fun finishUsage(close: Boolean) {
+		this._parent.finishUsage()
+		this._self.finishUsage(close)
+	}
+
+	@ManualStateManipulation
+	actual override fun close() {
+		this._self.close()
+	}
+
+	actual override fun toString(): String = "<closeable state ${this._parent} wrapped with ${this._self}>"
+}
\ No newline at end of file