public int getIncludedObjectPrefixesCount() {
    return includedObjectPrefixes_.size();
  }
<pre>
Optional. Include prefixes of the objects to be transformed.
* Supports full object name
* Supports prefix of the object name
* Wildcards are not supported
* Supports empty string for all objects in a bucket.
</pre>

<code>repeated string included_object_prefixes = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return The count of includedObjectPrefixes.
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/PrefixList.java