public com.google.protobuf.ByteString getFilterBytes() {
      java.lang.Object ref = filter_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        filter_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>

To filter on multiple expressions, provide each separate expression within
parentheses. For example:
```
(name = "example-cluster")
(nodeCount = "3")
```

By default, each expression is an `AND` expression. However, you can
include `AND` and `OR` expressions explicitly. For example:
```
(name = "example-cluster-1") AND
(createTime &gt; "2021-04-12T08:15:10.40Z") OR
(name = "example-cluster-2")
```
</pre>

<code>string filter = 4;</code>

@return The bytes for filter.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ListClustersRequest.java