public function function_($argument, $source, $alias = null, $format = 'txt')
    {
        return $this->request('reflection/function', 'POST', array($argument, $source, $alias, $format));
    }
public function function_($argument, $source, $alias = null, $format = 'txt')
    {
        return $this->request('reflection/function', 'POST', array($argument, $source, $alias, $format));
    }
public function function_ ( $ argument , $ source , $ alias = null , $ format = 'txt' ) { return $ this -> request ( 'reflection/function' , 'POST' , array ( $ argument , $ source , $ alias , $ format ) ) ; }
Reports information about a user function present in a data source.

@param string $argument Name of the function to reflect.
@param string $source   Path to the data source or its alias.
@param mixed  $alias    If set, the source refers to its alias.
@param string $format   To ouput results in other formats.

@return mixed
@alias  function
Reports information about a user function present in a data source .