use pt instead of seenAt

Author: mredolatti

client/src/main/java/io/split/client/dtos/KeyImpression.java

@@ -9,7 +9,7 @@ public class KeyImpression {
     public String label;
     public long time;
     public Long changeNumber; // can be null if there is no changeNumber
-    public Long seenAt;
+    public Long pt;
 
     @Override
     public boolean equals(Object o) {

client/src/main/java/io/split/client/impressions/ImpressionsManager.java

@@ -132,7 +132,7 @@ private void sendImpressions() {
                 impressionsForTest = new ArrayList<>();
                 tests.put(ki.feature, impressionsForTest);
             }
-            ki.seenAt = _impressionObserver.testAndSet(ki);
+            ki.pt = _impressionObserver.testAndSet(ki);
             impressionsForTest.add(ki);
         }
 

client/src/test/java/io/split/client/impressions/ImpressionsManagerTest.java

@@ -177,7 +177,7 @@ public void alreadySeenImpressionsAreMarked() throws URISyntaxException {
         List<TestImpressions> captured = impressionsCaptor.getValue();
         for (TestImpressions testImpressions : captured) {
             for (KeyImpression keyImpression : testImpressions.keyImpressions) {
-                assertThat(keyImpression.seenAt, is(equalTo(null)));
+                assertThat(keyImpression.pt, is(equalTo(null)));
             }
         }
 
@@ -194,7 +194,7 @@ public void alreadySeenImpressionsAreMarked() throws URISyntaxException {
         captured = impressionsCaptor.getValue();
         for (TestImpressions testImpressions : captured) {
             for (KeyImpression keyImpression : testImpressions.keyImpressions) {
-                assertThat(keyImpression.seenAt, is(equalTo(keyImpression.time)));
+                assertThat(keyImpression.pt, is(equalTo(keyImpression.time)));
             }
         }
 

client/src/test/java/io/split/engine/splitter/HashConsistencyTest.java

@@ -140,7 +140,6 @@ private void validateFileMurmurHash3_64(File file) throws IOException {
             long expected_hash = Long.parseLong(parts[2]);
             long[] hash = MurmurHash3.hash128x64(key.getBytes(), 0, key.length(), seed);
             Assert.assertEquals(expected_hash, hash[0]);
-
         }
     }
 }