parameters: (self, p)
docstring: ifacebase : ':' IDENTIFIER
                       |
docstring_summary: ifacebase : ':' IDENTIFIER
                       |
docstring_tokens: ifacebase : : IDENTIFIER |
function: def p_ifacebase(self, p):
          """ifacebase : ':' IDENTIFIER
                       | """
          if len(p) == 3:
              p[0] = p[2]
function_tokens: def p_ifacebase ( self , p ) : if len ( p ) == 3 : p [ 0 ] = p [ 2 ]