public Builder clearConstraints() {
      bitField0_ = (bitField0_ & ~0x00000004);
      constraints_ = null;
      if (constraintsBuilder_ != null) {
        constraintsBuilder_.dispose();
        constraintsBuilder_ = null;
      }
      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