adding deprecated one

connector/avro/src/main/scala/org/apache/spark/sql/avro/SchemaConverters.scala

@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.spark.sql.avro
+
+import org.apache.avro.Schema
+
+import org.apache.spark.annotation.Evolving
+import org.apache.spark.sql.avro.{SchemaConverters => CoreSchemaConverters}
+
+@deprecated("Use SchemaConverters in sql/core instead", "4.0.0")
+@Evolving
+object SchemaConverters {
+  @deprecated("Use SchemaConverters in sql/core instead", "4.0.0")
+  type SchemaType = CoreSchemaConverters.SchemaType
+
+  @deprecated("Use SchemaConverters in sql/core instead", "4.0.0")
+  def toSqlType(avroSchema: Schema): SchemaType = {
+    CoreSchemaConverters.toSqlType(avroSchema)
+  }
+
+  @deprecated("Use SchemaConverters in sql/core instead", "4.0.0")
+  def toSqlType(
+      avroSchema: Schema,
+      useStableIdForUnionType: Boolean,
+      stableIdPrefixForUnionType: String,
+      recursiveFieldMaxDepth: Int = -1): SchemaType = {
+    CoreSchemaConverters.toSqlType(
+      avroSchema,
+      useStableIdForUnionType,
+      stableIdPrefixForUnionType,
+      recursiveFieldMaxDepth)
+  }
+
+  @deprecated("Use SchemaConverters in sql/core instead", "4.0.0")
+  def toAvroType(
+      catalystType: org.apache.spark.sql.types.DataType,
+      nullable: Boolean = false,
+      recordName: String = "topLevelRecord",
+      nameSpace: String = ""): Schema = {
+    CoreSchemaConverters.toAvroType(catalystType, nullable, recordName, nameSpace)
+  }
+}