public function setParamsPattern($pattern) {
		$this->paramsPattern   = (string) $pattern;
		$this->paramExpression = null;
		
		return $this;
	}
public function setParamsPattern($pattern) {
		$this->paramsPattern   = (string) $pattern;
		$this->paramExpression = null;
		
		return $this;
	}
public function setParamsPattern ( $ pattern ) { $ this -> paramsPattern = ( string ) $ pattern ; $ this -> paramExpression = null ; return $ this ; }
Set the parameters' definition pattern

@param  string $pattern
@return Translator
Set the parameters definition pattern