interface FieldStorageConfigInterface

interface FieldStorageConfigInterface extends ConfigEntityInterface, FieldStorageDefinitionInterface {
    
    /**
     * Returns the field type.
     *
     * @return string
     *   The field type, i.e. the id of a field type plugin. For example 'text'.
     */
    public function getType();
    
    /**
     * Returns the name of the module providing the field type.
     *
     * @return string
     *   The name of the module that provides the field type.
     */
    public function getTypeProvider();
    
    /**
     * Returns the list of bundles where the field storage has fields.
     *
     * @return array
     *   An array of bundle names.
     */
    public function getBundles();
    
    /**
     * Checks if the field storage can be deleted.
     *
     * @return bool
     *   TRUE if the field storage can be deleted.
     */
    public function isDeletable();
    
    /**
     * Returns whether the field storage is locked or not.
     *
     * @return bool
     *   TRUE if the field storage is locked.
     */
    public function isLocked();
    
    /**
     * Sets the locked flag.
     *
     * @param bool $locked
     *   Sets value of locked flag.
     *
     * @return $this
     */
    public function setLocked($locked);
    
    /**
     * Sets the maximum number of items allowed for the field.
     *
     * @param int $cardinality
     *   The cardinality value.
     *
     * @return $this
     */
    public function setCardinality($cardinality);
    
    /**
     * Sets the value for a field setting by name.
     *
     * @param string $setting_name
     *   The name of the setting.
     * @param mixed $value
     *   The value of the setting.
     *
     * @return $this
     */
    public function setSetting($setting_name, $value);
    
    /**
     * Sets field storage settings.
     *
     * Note that the method does not unset existing settings not specified in the
     * incoming $settings array.
     *
     * For example:
     * @code
     *   // Given these are the default settings.
     *   $storage_definition->getSettings() === [
     *     'fruit' => 'apple',
     *     'season' => 'summer',
     *   ];
     *   // Change only the 'fruit' setting.
     *   $storage_definition->setSettings(['fruit' => 'banana']);
     *   // The 'season' setting persists unchanged.
     *   $storage_definition->getSettings() === [
     *     'fruit' => 'banana',
     *     'season' => 'summer',
     *   ];
     * @endcode
     *
     * For clarity, it is preferred to use setSetting() if not all available
     * settings are supplied.
     *
     * @param array $settings
     *   The array of storage settings.
     *
     * @return $this
     */
    public function setSettings(array $settings);
    
    /**
     * Sets whether the field is translatable.
     *
     * @param bool $translatable
     *   Whether the field is translatable.
     *
     * @return $this
     */
    public function setTranslatable($translatable);
    
    /**
     * Returns the custom storage indexes for the field data storage.
     *
     * @return array
     *   An array of custom indexes.
     */
    public function getIndexes();
    
    /**
     * Sets the custom storage indexes for the field data storage..
     *
     * @param array $indexes
     *   The array of custom indexes.
     *
     * @return $this
     */
    public function setIndexes(array $indexes);

}