diff --git a/samples/sample_binary.swift b/samples/sample_binary.swift
index 832eb3d..46ab99b 100644
--- a/samples/sample_binary.swift
+++ b/samples/sample_binary.swift
@@ -1,4 +1,19 @@
- // THIS IS JUST TO SHOW THE CODE, PLEASE DO IMPORT FLATBUFFERS WITH SPM..
+/*
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed 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.
+ */
+
 import FlatBuffers
 
 typealias Monster = MyGame.Sample.Monster
@@ -7,61 +22,62 @@
 typealias Vec3 = MyGame.Sample.Vec3
 
 func main() {
-    let expectedDMG: [Int16] = [3, 5]
-    let expectedNames = ["Sword", "Axe"]
+  let expectedDMG: [Int16] = [3, 5]
+  let expectedNames = ["Sword", "Axe"]
 
-    var builder = FlatBufferBuilder(initialSize: 1024)
-    let weapon1Name = builder.create(string: expectedNames[0])
-    let weapon2Name = builder.create(string: expectedNames[1])
-        
-    let weapon1Start = Weapon.startWeapon(&builder)
-    Weapon.add(name: weapon1Name, &builder)
-    Weapon.add(damage: expectedDMG[0], &builder)
-    let sword = Weapon.endWeapon(&builder, start: weapon1Start)
-    let weapon2Start = Weapon.startWeapon(&builder)
-    Weapon.add(name: weapon2Name, &builder)
-    Weapon.add(damage: expectedDMG[1], &builder)
-    let axe = Weapon.endWeapon(&builder, start: weapon2Start)
-    
-    let name = builder.create(string: "Orc")
-    let inventory: [Byte] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
-    let inventoryOffset = builder.createVector(inventory)
+  var builder = FlatBufferBuilder(initialSize: 1024)
+  let weapon1Name = builder.create(string: expectedNames[0])
+  let weapon2Name = builder.create(string: expectedNames[1])
 
-    let weaponsOffset = builder.createVector(ofOffsets: [sword, axe])
-    let pos = MyGame.Sample.createVec3(x: 1, y: 2, z: 3)
+  let weapon1Start = Weapon.startWeapon(&builder)
+  Weapon.add(name: weapon1Name, &builder)
+  Weapon.add(damage: expectedDMG[0], &builder)
+  let sword = Weapon.endWeapon(&builder, start: weapon1Start)
+  let weapon2Start = Weapon.startWeapon(&builder)
+  Weapon.add(name: weapon2Name, &builder)
+  Weapon.add(damage: expectedDMG[1], &builder)
+  let axe = Weapon.endWeapon(&builder, start: weapon2Start)
 
-    let orc = Monster.createMonster(&builder,
-                                    structOfPos: pos,
-                                    hp: 300,
-                                    offsetOfName: name,
-                                    vectorOfInventory: inventoryOffset,
-                                    color: .red,
-                                    vectorOfWeapons: weaponsOffset,
-                                    equippedType: .weapon,
-                                    offsetOfEquipped: axe)
-    builder.finish(offset: orc)
-    
-    let buf = builder.sizedByteArray
-    let monster = Monster.getRootAsMonster(bb: ByteBuffer(bytes: buf))
+  let name = builder.create(string: "Orc")
+  let inventory: [Byte] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  let inventoryOffset = builder.createVector(inventory)
 
-    assert(monster.mana == 150)
-    assert(monster.hp == 300)
-    assert(monster.name == "Orc")
-    assert(monster.color == MyGame.Sample.Color.red)
-    assert(monster.pos != nil)
-    for i in 0..<monster.inventoryCount {
-        assert(i == monster.inventory(at: i))
-    }
-        
-    for i in 0..<monster.weaponsCount {
-        let weap = monster.weapons(at: i)
-        let index = Int(i)
-        assert(weap?.damage == expectedDMG[index])
-        assert(weap?.name == expectedNames[index])
-    }
-    assert(monster.equippedType == .weapon)
-    let equipped = monster.equipped(type: Weapon.self)
-    assert(equipped?.name == "Axe")
-    assert(equipped?.damage == 5)
-    print("Monster Object is Verified")
+  let weaponsOffset = builder.createVector(ofOffsets: [sword, axe])
+  let pos = MyGame.Sample.createVec3(x: 1, y: 2, z: 3)
+
+  let orc = Monster.createMonster(
+    &builder,
+    structOfPos: pos,
+    hp: 300,
+    offsetOfName: name,
+    vectorOfInventory: inventoryOffset,
+    color: .red,
+    vectorOfWeapons: weaponsOffset,
+    equippedType: .weapon,
+    offsetOfEquipped: axe)
+  builder.finish(offset: orc)
+
+  let buf = builder.sizedByteArray
+  let monster = Monster.getRootAsMonster(bb: ByteBuffer(bytes: buf))
+
+  assert(monster.mana == 150)
+  assert(monster.hp == 300)
+  assert(monster.name == "Orc")
+  assert(monster.color == MyGame.Sample.Color.red)
+  assert(monster.pos != nil)
+  for i in 0..<monster.inventoryCount {
+    assert(i == monster.inventory(at: i))
+  }
+
+  for i in 0..<monster.weaponsCount {
+    let weap = monster.weapons(at: i)
+    let index = Int(i)
+    assert(weap?.damage == expectedDMG[index])
+    assert(weap?.name == expectedNames[index])
+  }
+  assert(monster.equippedType == .weapon)
+  let equipped = monster.equipped(type: Weapon.self)
+  assert(equipped?.name == "Axe")
+  assert(equipped?.damage == 5)
+  print("Monster Object is Verified")
 }