diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/FirIdeResolveStateService.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/FirIdeResolveStateService.kt
index b57c168a077..dedddfc4052 100644
--- a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/FirIdeResolveStateService.kt
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/FirIdeResolveStateService.kt
@@ -10,7 +10,7 @@ import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.idea.util.psiModificationTrackerBasedCachedValue
 import java.util.concurrent.ConcurrentHashMap
 import org.jetbrains.kotlin.idea.caches.project.*
-import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.FirIdeModuleLibraryDependenciesSession
+import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.FirIdeLibrariesSession
 import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.FirIdeSessionProvider
 import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.FirIdeSourcesSession
 
@@ -23,7 +23,7 @@ internal class FirIdeResolveStateService(private val project: Project) {
         val firPhaseRunner = FirPhaseRunner()
         val sessionProvider = FirIdeSessionProvider(project)
 
-        val librariesSession = FirIdeModuleLibraryDependenciesSession.create(moduleInfo as ModuleSourceInfo, sessionProvider, project)
+        val librariesSession = FirIdeLibrariesSession.create(moduleInfo as ModuleSourceInfo, sessionProvider, project)
         val sourcesSession = FirIdeSourcesSession.create(
             project,
             moduleInfo,
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeLibrarySession.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeLibrarySession.kt
index 52d37d823a4..71b33759878 100644
--- a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeLibrarySession.kt
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeLibrarySession.kt
@@ -22,7 +22,10 @@ import org.jetbrains.kotlin.idea.fir.low.level.api.IdeSessionComponents
 import org.jetbrains.kotlin.load.java.JavaClassFinderImpl
 import org.jetbrains.kotlin.load.kotlin.VirtualFileFinderFactory
 
-internal class FirIdeModuleLibraryDependenciesSession private constructor(
+/**
+ * [org.jetbrains.kotlin.fir.FirSession] responsible for all libraries analysing module transitively depends on
+ */
+internal class FirIdeLibrariesSession private constructor(
     sessionProvider: FirIdeSessionProvider,
     override val scope: GlobalSearchScope
 ) : FirIdeSession(sessionProvider) {
@@ -31,7 +34,7 @@ internal class FirIdeModuleLibraryDependenciesSession private constructor(
             moduleInfo: ModuleSourceInfo,
             sessionProvider: FirIdeSessionProvider,
             project: Project,
-        ): FirIdeModuleLibraryDependenciesSession {
+        ): FirIdeLibrariesSession {
             val searchScope = moduleInfo.module.moduleWithLibrariesScope
             val javaClassFinder = JavaClassFinderImpl().apply {
                 setProjectInstance(project)
@@ -40,7 +43,7 @@ internal class FirIdeModuleLibraryDependenciesSession private constructor(
             val packagePartProvider = IDEPackagePartProvider(searchScope)
 
             val kotlinClassFinder = VirtualFileFinderFactory.getInstance(project).create(searchScope)
-            return FirIdeModuleLibraryDependenciesSession(sessionProvider, searchScope).apply {
+            return FirIdeLibrariesSession(sessionProvider, searchScope).apply {
                 registerCommonComponents()
 
                 val javaSymbolProvider = JavaSymbolProvider(this, sessionProvider.project, searchScope)
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSessionProvider.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSessionProvider.kt
index 236927622dc..975489f0a16 100644
--- a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSessionProvider.kt
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSessionProvider.kt
@@ -9,13 +9,9 @@ import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.analyzer.ModuleInfo
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.FirSessionProvider
-import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
 import org.jetbrains.kotlin.idea.caches.project.IdeaModuleInfo
 import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
-import org.jetbrains.kotlin.idea.caches.project.getModuleInfo
 import org.jetbrains.kotlin.idea.caches.project.isLibraryClasses
-import org.jetbrains.kotlin.psi.KtElement
-import java.util.concurrent.ConcurrentHashMap
 import org.jetbrains.kotlin.idea.fir.low.level.api.annotations.ThreadSafe
 
 @ThreadSafe
@@ -23,7 +19,7 @@ internal class FirIdeSessionProvider(
     override val project: Project,
 ) : FirSessionProvider {
     private lateinit var sourcesSession: FirIdeSourcesSession
-    private lateinit var librariesSession: FirIdeModuleLibraryDependenciesSession
+    private lateinit var librariesSession: FirIdeLibrariesSession
 
 
     fun setSourcesSession(sourcesSession: FirIdeSourcesSession) {
@@ -31,7 +27,7 @@ internal class FirIdeSessionProvider(
         this.sourcesSession = sourcesSession
     }
 
-    fun setLibrariesSession(librariesSession: FirIdeModuleLibraryDependenciesSession) {
+    fun setLibrariesSession(librariesSession: FirIdeLibrariesSession) {
         check(!this::librariesSession.isInitialized)
         this.librariesSession = librariesSession
     }
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSourcesSession.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSourcesSession.kt
index be453290a1d..4cdcacbb5df 100644
--- a/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSourcesSession.kt
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/src/org/jetbrains/kotlin/idea/fir/low/level/api/sessions/FirIdeSourcesSession.kt
@@ -32,7 +32,9 @@ import org.jetbrains.kotlin.idea.fir.low.level.api.providers.FirIdeProvider
 import org.jetbrains.kotlin.idea.fir.low.level.api.providers.firIdeProvider
 import org.jetbrains.kotlin.idea.fir.low.level.api.util.collectTransitiveDependenciesWithSelf
 
-
+/**
+ * [org.jetbrains.kotlin.fir.FirSession] responsible for all Kotlin & Java source modules analysing module transitively depends on
+ */
 internal class FirIdeSourcesSession private constructor(
     sessionProvider: FirIdeSessionProvider,
     override val scope: GlobalSearchScope,
@@ -49,7 +51,7 @@ internal class FirIdeSourcesSession private constructor(
             moduleInfo: ModuleSourceInfo,
             firPhaseRunner: FirPhaseRunner,
             sessionProvider: FirIdeSessionProvider,
-            librariesSession: FirIdeModuleLibraryDependenciesSession,
+            librariesSession: FirIdeLibrariesSession,
         ): FirIdeSourcesSession {
             val scopeProvider = KotlinScopeProvider(::wrapScopeWithJvmMapped)
             val firBuilder = FirFileBuilder(scopeProvider, firPhaseRunner)