public function withWorkingPublicKeyParameters(Element $params = null): self
    {
        $state = clone $this;
        $state->_workingPublicKeyParameters = $params;
        return $state;
    }
public function withWorkingPublicKeyParameters(Element $params = null): self
    {
        $state = clone $this;
        $state->_workingPublicKeyParameters = $params;
        return $state;
    }
public function withWorkingPublicKeyParameters ( Element $ params = null ) : self { $ state = clone $ this ; $ state -> _workingPublicKeyParameters = $ params ; return $ state ; }
Get self with working_public_key_parameters.

@param Element|null $params
@return self
Get self with working_public_key_parameters .