<s> from openflow . optin_manager . sfa . rspecs . elements . element import Element <EOL> class OpenFlowSwitch ( Element ) : <EOL> fields = [ <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT:port>' , <EOL> ] </s>
