fix: make it binary compatible while adding implementation for UUID methods in AbstractStructReader

Author: gagangupt16

google-cloud-spanner/clirr-ignored-differences.xml

@@ -567,16 +567,6 @@
   </difference>
 
   <!-- UUID -->
-  <difference>
-    <differenceType>7013</differenceType>
-    <className>com/google/cloud/spanner/AbstractStructReader</className>
-    <method>java.util.UUID getUuidInternal(int)</method>
-  </difference>
-  <difference>
-    <differenceType>7013</differenceType>
-    <className>com/google/cloud/spanner/AbstractStructReader</className>
-    <method>java.util.List getUuidListInternal(int)</method>
-  </difference>
   <difference>
     <differenceType>7012</differenceType>
     <className>com/google/cloud/spanner/StructReader</className>

google-cloud-spanner/src/main/java/com/google/cloud/spanner/AbstractStructReader.java

@@ -68,7 +68,9 @@ protected String getPgJsonbInternal(int columnIndex) {
 
   protected abstract Date getDateInternal(int columnIndex);
 
-  protected abstract UUID getUuidInternal(int columnIndex);
+  protected UUID getUuidInternal(int columnIndex) {
+    throw new UnsupportedOperationException("Not implemented");
+  }
 
   protected <T extends AbstractMessage> T getProtoMessageInternal(int columnIndex, T message) {
     throw new UnsupportedOperationException("Not implemented");
@@ -131,7 +133,9 @@ protected List<String> getPgJsonbListInternal(int columnIndex) {
 
   protected abstract List<Date> getDateListInternal(int columnIndex);
 
-  protected abstract List<UUID> getUuidListInternal(int columnIndex);
+  protected List<UUID> getUuidListInternal(int columnIndex) {
+    throw new UnsupportedOperationException("Not implemented");
+  }
 
   protected abstract List<Struct> getStructListInternal(int columnIndex);