public function add_tag( $tag = '', $regex = '', $force = false ) {
		if ( ! isset( $this->rewrite_tag[ $tag ] ) || isset( $this->rewrite_tag[ $tag ] ) && true === $force ) {
			$this->rewrite_tag[ $tag ] = $regex;
		}
		return $this;
	}
public function add_tag( $tag = '', $regex = '', $force = false ) {
		if ( ! isset( $this->rewrite_tag[ $tag ] ) || isset( $this->rewrite_tag[ $tag ] ) && true === $force ) {
			$this->rewrite_tag[ $tag ] = $regex;
		}
		return $this;
	}
public function add_tag ( $ tag = '' , $ regex = '' , $ force = false ) { if ( ! isset ( $ this -> rewrite_tag [ $ tag ] ) || isset ( $ this -> rewrite_tag [ $ tag ] ) && true === $ force ) { $ this -> rewrite_tag [ $ tag ] = $ regex ; } return $ this ; }
Adds Rewrite Tag.

@param string  $tag
@param string  $regex
@param boolean $force

@return $this
Adds Rewrite Tag .