fix: hide TableReference data struct (#2855)

* fix: hide TableReference data struct

* chore: add clirr ignored differences

* chore: organize imports

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Neenu1995 <neenushaji@google.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

.gitignore

@@ -10,4 +10,6 @@ __pycache__
 .new-list.txt
 .org-list.txt
 SimpleBenchmarkApp/src/main/java/com/google/cloud/App.java
-.flattened-pom.xml
+.flattened-pom.xml
+# Local Test files
+*ITLocalTest.java

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

@@ -94,4 +94,14 @@
     <className>com/google/cloud/bigquery/TableInfo*</className>
     <method>*TableConstraints(*)</method>
   </difference>
+  <difference>
+    <differenceType>7013</differenceType>
+    <className>com/google/cloud/bigquery/IndexUnusedReason*</className>
+    <method>*BaseTableId(*)</method>
+  </difference>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/bigquery/IndexUnusedReason*</className>
+    <method>*BaseTable(*)</method>
+  </difference>
   </differences>

google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/IndexUnusedReason.java

@@ -16,7 +16,6 @@
 
 package com.google.cloud.bigquery;
 
-import com.google.api.services.bigquery.model.TableReference;
 import com.google.auto.value.AutoValue;
 import java.io.Serializable;
 import javax.annotation.Nullable;
@@ -52,9 +51,9 @@ public abstract static class Builder {
     /**
      * Specifies the base table involved in the reason that no search index was used.
      *
-     * @param tableReference tableReference or {@code null} for none
+     * @param baseTable baseTable or {@code null} for none
      */
-    public abstract Builder setBaseTable(TableReference tableReference);
+    public abstract Builder setBaseTableId(TableId baseTable);
 
     /** Creates a @code IndexUnusedReason} object. */
     public abstract IndexUnusedReason build();
@@ -96,7 +95,7 @@ public static Builder newBuilder() {
    * @return value or {@code null} for none
    */
   @Nullable
-  public abstract TableReference getBaseTable();
+  public abstract TableId getBaseTableId();
 
   com.google.api.services.bigquery.model.IndexUnusedReason toPb() {
     com.google.api.services.bigquery.model.IndexUnusedReason indexUnusedReason =
@@ -110,8 +109,8 @@ com.google.api.services.bigquery.model.IndexUnusedReason toPb() {
     if (getMessage() != null) {
       indexUnusedReason.setMessage(indexUnusedReason.getMessage());
     }
-    if (getBaseTable() != null) {
-      indexUnusedReason.setBaseTable(indexUnusedReason.getBaseTable());
+    if (getBaseTableId() != null) {
+      indexUnusedReason.setBaseTable(getBaseTableId().toPb());
     }
     return indexUnusedReason;
   }
@@ -129,7 +128,7 @@ static IndexUnusedReason fromPb(
       builder.setMessage(indexUnusedReason.getMessage());
     }
     if (indexUnusedReason.getBaseTable() != null) {
-      builder.setBaseTable(indexUnusedReason.getBaseTable());
+      builder.setBaseTableId(TableId.fromPb(indexUnusedReason.getBaseTable()));
     }
     return builder.build();
   }