public Builder clearThreatTypes() {
        threatTypes_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000001);
        onChanged();
        return this;
      }
<pre>
The ThreatList this threat belongs to.
This must contain at least one entry.
</pre>

<code>repeated .google.cloud.webrisk.v1.ThreatType threat_types = 1;</code>

@return This builder for chaining.
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/SearchHashesResponse.java