diff --git a/model/v1/doc.go b/model/v1/doc.go
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+++ b/model/v1/doc.go
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+// Copyright (c) 2019 The Jaeger Authors.
+// Copyright (c) 2017 Uber Technologies, Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package model describes the internal data model for Trace and Span
+package model