private void ensureStartingUrlsIsMutable() {
      if (!startingUrls_.isModifiable()) {
        startingUrls_ = new com.google.protobuf.LazyStringArrayList(startingUrls_);
      }
      bitField0_ |= 0x00000008;
    }
<pre>
The maximum QPS during scanning. A valid value ranges from 5 to 20
inclusively. If the field is unspecified or its value is set 0, server will
default to 15. Other values outside of [5, 20] range will be rejected with
INVALID_ARGUMENT error.
</pre>

<code>int32 max_qps = 3;</code>

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