src/Json.php
public function format(): Format\Format
    {
        if (null === $this->format) {
            $this->format = Format\Format::fromJson($this);
        }

        return $this->format;
    }
public function format(): Format\Format
    {
        if (null === $this->format) {
            $this->format = Format\Format::fromJson($this);
        }

        return $this->format;
    }
public function format ( ) : Format \ Format { if ( null === $ this -> format ) { $ this -> format = Format \ Format :: fromJson ( $ this ) ; } return $ this -> format ; }
Returns the format of the original JSON value.

@return Format\Format
Returns the format of the original JSON value .