change return type to int

Author: HonahX

polaris-core/src/main/java/org/apache/polaris/core/policy/PolicyEntity.java

@@ -71,8 +71,8 @@ public String getContent() {
   }
 
   @JsonIgnore
-  public String getPolicyVersion() {
-    return getPropertiesAsMap().get(POLICY_VERSION_KEY);
+  public int getPolicyVersion() {
+    return Integer.parseInt(getPropertiesAsMap().get(POLICY_VERSION_KEY));
   }
 
   public static class Builder extends PolarisEntity.BaseBuilder<PolicyEntity, Builder> {
@@ -116,8 +116,8 @@ public Builder setDescription(String description) {
       return this;
     }
 
-    public Builder setPolicyVersion(long version) {
-      properties.put(POLICY_VERSION_KEY, Long.toString(version));
+    public Builder setPolicyVersion(int version) {
+      properties.put(POLICY_VERSION_KEY, Integer.toString(version));
       return this;
     }