parameters: (self, name)
return_statement: return f
docstring: Add function to flow.
docstring_summary: Add function to flow.
docstring_tokens: Add function to flow .
function: def func(self, name):
      """Add function to flow."""
      if isinstance(name, Function): return name
      f = self.funcs.get(name, None)
      if f == None:
        f = Function(name)
        self.funcs[name] = f
      return f
function_tokens: def func ( self , name ) : if isinstance ( name , Function ) : return name f = self . funcs . get ( name , None ) if f == None : f = Function ( name ) self . funcs [ name ] = f return f