private void ensureHeadersIsMutable() {
      if (!((bitField0_ & 0x00000001) != 0)) {
        headers_ =
            new java.util.ArrayList<
                com.google.cloud.websecurityscanner.v1alpha.VulnerableHeaders.Header>(headers_);
        bitField0_ |= 0x00000001;
      }
    }
<pre>
Information about vulnerable or missing HTTP Headers.
</pre>

Protobuf type {@code google.cloud.websecurityscanner.v1alpha.VulnerableHeaders}
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/VulnerableHeaders.java