public Builder setConstraints(
        com.google.webrisk.v1.ComputeThreatListDiffRequest.Constraints value) {
      if (constraintsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        constraints_ = value;
      } else {
        constraintsBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<pre>
Required. The constraints associated with this request.
</pre>

<code>
.google.cloud.webrisk.v1.ComputeThreatListDiffRequest.Constraints constraints = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ComputeThreatListDiffRequest.java