src/main/php/com-realexpayments-hpp-sdk/domain/HppRequest.php
public function addReturnTss( $returnTss ) {
		if ( is_bool( $returnTss ) ) {
			$this->returnTss = $returnTss ? Flag::TRUE : Flag::FALSE;
		} else {
			$this->returnTss = $returnTss;
		}

		return $this;
	}
public function addReturnTss( $returnTss ) {
		if ( is_bool( $returnTss ) ) {
			$this->returnTss = $returnTss ? Flag::TRUE : Flag::FALSE;
		} else {
			$this->returnTss = $returnTss;
		}

		return $this;
	}
Helper method for adding a returnTss

@param String|bool $returnTss

@return HppRequest