(PHP 5 >= 5.5.0, PHP 7)
  	
    
      
      Returns whether this function is a generator
    
    
      
      public bool ReflectionFunctionAbstract::isGenerator ( void )
    
    
    
      
      
    
      Returns: 
     Returns TRUE if the function is generator, FALSE if it is not or NULL on failure. 
This function is currently not documented; only its argument list is available.
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