fix code style

src/main/kotlin/assignment/Assignment.kt

@@ -18,4 +18,4 @@ internal fun Assignment.canonicalize(): String {
         sb.append(key.trim(), " ", value?.variant?.key?.trim(), " ")
     }
     return sb.toString()
-}
+}

src/main/kotlin/assignment/AssignmentFilter.kt

@@ -19,4 +19,4 @@ internal class InMemoryAssignmentFilter(size: Int, ttlMillis: Long = DAY_MILLIS)
         }
         return track
     }
-}
+}

src/main/kotlin/assignment/AssignmentService.kt

@@ -53,4 +53,4 @@ internal fun Assignment.toAmplitudeEvent(): Event {
     event.insertId =
         "${this.user.userId} ${this.user.deviceId} ${this.canonicalize().hashCode()} ${this.timestamp / DAY_MILLIS}"
     return event
-}
+}

src/main/kotlin/util/Cache.kt

@@ -83,4 +83,4 @@ internal class Cache<K, V>(private val capacity: Int, private val ttlMillis: Lon
         before!!.next = after
         after!!.prev = before
     }
-}
+}

src/test/kotlin/assignment/AssignmentFilterTest.kt

@@ -180,4 +180,4 @@ class AssignmentFilterTest {
         Thread.sleep(1050)
         Assert.assertTrue(filter.shouldTrack(assignment2))
     }
-}
+}

src/test/kotlin/assignment/AssignmentServiceTest.kt

@@ -42,4 +42,4 @@ class AssignmentServiceTest {
         val expected = "user device ${canonicalization.hashCode()} ${assignment.timestamp / DAY_MILLIS}"
         Assert.assertEquals(expected, event.insertId)
     }
-}
+}

src/test/kotlin/assignment/Utils.kt

@@ -12,4 +12,4 @@ internal fun flagResult(
     type: String = "release",
 ): FlagResult {
     return FlagResult(Variant(variant), description, isDefaultVariant, expKey, deployed, type)
-}
+}