public com.google.protobuf.ByteString getLoginUrlBytes() {
          java.lang.Object ref = loginUrl_;
          if (ref instanceof String) {
            com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
            loginUrl_ = b;
            return b;
          } else {
            return (com.google.protobuf.ByteString) ref;
          }
        }
<pre>
Required. The login form URL of the website.
</pre>

<code>string login_url = 3;</code>

@return The bytes for loginUrl.
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java