src/Karika/CoreBundle/Controller/Api/ApiController.php
protected function formClassName(): string
    {
        if ($this->formClassName)
        {
            return $this->formClassName;
        }

        $entityClassName = $this->entityClassName();
        $this->formClassName = substr(str_replace('/Form/', '/Entity/', $entityClassName), 0, -4);

        return $this->formClassName;
    }
protected function formClassName(): string
    {
        if ($this->formClassName)
        {
            return $this->formClassName;
        }

        $entityClassName = $this->entityClassName();
        $this->formClassName = substr(str_replace('/Form/', '/Entity/', $entityClassName), 0, -4);

        return $this->formClassName;
    }
Get Form class name for this controller

Override this method if necessary

@return string