public function setDelimiters($leftDelimiter = '{', $rightDelimiter = '}'): RendererInterface
	{
		$this->leftDelimiter  = $leftDelimiter;
		$this->rightDelimiter = $rightDelimiter;
		return $this;
	}
public function setDelimiters($leftDelimiter = '{', $rightDelimiter = '}'): RendererInterface
	{
		$this->leftDelimiter  = $leftDelimiter;
		$this->rightDelimiter = $rightDelimiter;
		return $this;
	}
public function setDelimiters ( $ leftDelimiter = '{' , $ rightDelimiter = '}' ) : RendererInterface { $ this -> leftDelimiter = $ leftDelimiter ; $ this -> rightDelimiter = $ rightDelimiter ; return $ this ; }
Over-ride the substitution field delimiters.

@param  string $leftDelimiter
@param  string $rightDelimiter
@return RendererInterface
Over - ride the substitution field delimiters .