chore: drop support for MetaModelBranch

Legacy info repositories are migrated automatically on startup.

BREAKING CHANGE: use `ModelMigrations.useResolvedConceptsFromMetaModel` to migrate data written with `MetaModelBranch`.

Author: Oleksandr Dzhychko

model-client/src/commonMain/kotlin/org/modelix/model/ModelFacade.kt

@@ -16,7 +16,6 @@ import org.modelix.model.lazy.CLTree
 import org.modelix.model.lazy.CLVersion
 import org.modelix.model.lazy.ObjectStoreCache
 import org.modelix.model.lazy.RepositoryId
-import org.modelix.model.metameta.MetaModelBranch
 import org.modelix.model.operations.OTBranch
 import org.modelix.model.persistent.CPVersion
 import org.modelix.model.persistent.MapBaseStore
@@ -92,9 +91,7 @@ object ModelFacade {
         body: (IWriteTransaction) -> Unit,
     ): CLVersion {
         val otBranch = OTBranch(PBranch(baseVersion.tree, client.idGenerator), client.idGenerator, client.storeCache)
-        MetaModelBranch(otBranch).computeWriteT { t ->
-            body(t)
-        }
+        otBranch.computeWriteT { t -> body(t) }
 
         val operationsAndTree = otBranch.operationsAndTree
         val newVersion = CLVersion.createRegularVersion(

model-client/src/commonMain/kotlin/org/modelix/model/metameta/MetaModelBranch.kt

@@ -35,9 +35,6 @@ internal object MetaModelMigration {
     )
 
     fun useResolvedConceptsFromMetaModel(rawBranch: IBranch) {
-        require(rawBranch !is MetaModelBranch) {
-            "Pass the underlying branch and not the `MetaModelBranch` for migration."
-        }
         LOG.info { "Start migration for `$rawBranch`." }
         rawBranch.runWriteT { transaction ->
             val root = rawBranch.getRootNode()

model-client/src/commonMain/kotlin/org/modelix/model/metameta/MetaModelMigration.kt

@@ -31,7 +31,6 @@ import org.modelix.model.lazy.CLTree
 import org.modelix.model.lazy.CLVersion
 import org.modelix.model.lazy.CLVersion.Companion.loadFromHash
 import org.modelix.model.lazy.RepositoryId
-import org.modelix.model.metameta.MetaModelBranch
 import org.modelix.model.operations.IAppliedOperation
 import org.modelix.model.operations.IOperation
 import org.modelix.model.operations.OTBranch
@@ -50,9 +49,6 @@ actual open class ReplicatedRepository actual constructor(
 ) {
     private val localBranch: IBranch
     private val localOTBranch: OTBranch
-
-    @Deprecated("MetaModelBranch is deprecated")
-    private val localMMBranch: IBranch
     private val mergeLock = Any()
     private val merger: VersionMerger
     private val coroutineScope = CoroutineScope(Dispatchers.Default)
@@ -74,7 +70,7 @@ actual open class ReplicatedRepository actual constructor(
     actual val branch: IBranch
         get() {
             checkDisposed()
-            return localMMBranch
+            return localOTBranch
         }
 
     /**
@@ -267,7 +263,6 @@ actual open class ReplicatedRepository actual constructor(
         remoteVersion = initialVersion
         localBranch = PBranch(initialTree.value, client.idGenerator)
         localOTBranch = OTBranch(localBranch, client.idGenerator, store)
-        localMMBranch = MetaModelBranch(localOTBranch)
         merger = VersionMerger(store, client.idGenerator)
         versionChangeDetector = object : VersionChangeDetector(client, branchReference.getKey(), coroutineScope) {
             override fun processVersionChange(oldVersionHash: String?, newVersionHash: String?) {