FML/Script/Features/ValuePickerFeature.php
public function setLabel(Label $label)
    {
        $label->checkId();
        $label->setScriptEvents(true);
        $this->label = $label;
        return $this;
    }
public function setLabel(Label $label)
    {
        $label->checkId();
        $label->setScriptEvents(true);
        $this->label = $label;
        return $this;
    }
public function setLabel ( Label $ label ) { $ label -> checkId ( ) ; $ label -> setScriptEvents ( true ) ; $ this -> label = $ label ; return $ this ; }
Set the Label

@api
@param Label $label Label
@return static
Set the Label