Stabilize existing Path API and annotate with @Throws where appropriate

KT-45913

compiler/daemon/daemon-tests/test/org/jetbrains/kotlin/daemon/CompilerDaemonTest.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.daemon
@@ -43,7 +32,7 @@ import java.util.concurrent.CountDownLatch
 import java.util.concurrent.TimeUnit
 import kotlin.concurrent.thread
 import kotlin.io.path.ExperimentalPathApi
-import kotlin.io.path.invariantSeparatorsPath
+import kotlin.io.path.invariantSeparatorsPathString
 import kotlin.script.dependencies.Environment
 import kotlin.script.dependencies.ScriptContents
 import kotlin.script.experimental.dependencies.DependenciesResolver
@@ -1005,7 +994,7 @@ internal val File.loggerCompatiblePath: String
 
 @OptIn(ExperimentalPathApi::class)
 internal val Path.loggerCompatiblePath: String
-    get() = invariantSeparatorsPath
+    get() = invariantSeparatorsPathString
 
 
 open class TestKotlinScriptDummyDependenciesResolver : DependenciesResolver {