Adds the Slugify service.

src/SlugifyServiceInterface.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\cdesai_tff;
+
+
+use Drupal\Core\Field\FieldItemInterface;
+
+interface SlugifyServiceInterface {
+
+  const CONFIG_NAME = 'cdesai_tff.settings';
+  const DEFAULT_SEPARATOR = '_';
+
+  /**
+   * Converts the given item to slug format.
+   *
+   * @param \Drupal\Core\Field\FieldItemInterface $item
+   *   Field item object that needs to be converted.
+   *
+   * @param string|null $separator (optional)
+   *   Separator to use for slug. Defaults to '_'.
+   *
+   * @return string
+   *   The converted string.
+   */
+  public function convertToSlug(FieldItemInterface $item, $separator = NULL);
+
+}