src/Column/Column.php
public function setViewTransformer(DataTransformerInterface $viewTransformer = null)
    {
        if ($this->locked) {
            throw new BadMethodCallException('Column setter methods cannot be accessed anymore once the data is locked.');
        }

        $this->viewTransformer = $viewTransformer;
    }
public function setViewTransformer(DataTransformerInterface $viewTransformer = null)
    {
        if ($this->locked) {
            throw new BadMethodCallException('Column setter methods cannot be accessed anymore once the data is locked.');
        }

        $this->viewTransformer = $viewTransformer;
    }
{@inheritdoc}