public Builder setFilterBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      filter_ = value;
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
Optional. Filtering only supports equality on deployment state.
It should be in the form: "state = DRAFT". `OR` operator can be used to
get response for multiple states. e.g. "state = DRAFT OR state = APPLIED".
</pre>

<code>string filter = 4 [(.google.api.field_behavior) = OPTIONAL];</code>

@param value The bytes for filter to set.
@return This builder for chaining.
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/ListDeploymentsRequest.java