--- /dev/null
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2022 Northeastern University
+ * Copyright (c) 2022 Sapienza, University of Rome
+ * Copyright (c) 2022 University of Padova
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Andrea Lacava <thecave003@gmail.com>
+ * Tommaso Zugno <tommasozugno@gmail.com>
+ * Michele Polese <michele.polese@gmail.com>
+ */
+
+#include <ns3/function-description.h>
+#include <ns3/asn1c-types.h>
+#include <ns3/log.h>
+
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("FunctionDescription");
+
+FunctionDescription::FunctionDescription ()
+{
+// E2SM_KPM_RANfunction_Description_t *descriptor = new E2SM_KPM_RANfunction_Description_t ();
+// FillAndEncodeKpmFunctionDescription (descriptor);
+// ASN_STRUCT_FREE_CONTENTS_ONLY (asn_DEF_E2SM_KPM_RANfunction_Description, descriptor);
+// delete descriptor;
+ m_size = 0;
+}
+
+FunctionDescription::~FunctionDescription ()
+{
+ free (m_buffer);
+ m_size = 0;
+}
+
+// TODO improve
+// void
+// FunctionDescription::Encode (E2SM_KPM_RANfunction_Description_t *descriptor)
+// {
+// asn_codec_ctx_t *opt_cod = 0; // disable stack bounds checking
+// // encode the structure into the e2smbuffer
+// asn_encode_to_new_buffer_result_s encodedMsg = asn_encode_to_new_buffer (
+// opt_cod, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2SM_KPM_RANfunction_Description, descriptor);
+
+// if (encodedMsg.result.encoded < 0)
+// {
+// NS_FATAL_ERROR ("Error during the encoding of the RIC Indication Header, errno: "
+// << strerror (errno) << ", failed_type " << encodedMsg.result.failed_type->name
+// << ", structure_ptr " << encodedMsg.result.structure_ptr);
+// }
+
+// m_buffer = encodedMsg.buffer;
+// m_size = encodedMsg.result.encoded;
+// }
+
+} // namespace ns3