parameters: (self)
return_statement: return self.node.is_ctrl_var()
docstring: If the node is a control dependence variable, then return true.
  
          Returns:
              bool: indicate whether the node is a control dependence variable.
docstring_summary: If the node is a control dependence variable, then return true.
docstring_tokens: If the node is a control dependence variable then return true .
function: def is_ctrl_var(self):
          """
          If the node is a control dependence variable, then return true.
  
          Returns:
              bool: indicate whether the node is a control dependence variable.
          """
          return self.node.is_ctrl_var()
function_tokens: def is_ctrl_var ( self ) : return self . node . is_ctrl_var ( )