diff -u b/core/modules/migrate/src/Plugin/migrate/process/Explode.php b/core/modules/migrate/src/Plugin/migrate/process/Explode.php
--- b/core/modules/migrate/src/Plugin/migrate/process/Explode.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/Explode.php
@@ -8,21 +8,24 @@
 use Drupal\migrate\Row;
 
 /**
- * Explodes the source value into an array of values.
+ * Splits the source string into an array of strings, using a delimiter.
  *
- * The explode process plugin creates an array of strings, each of which is a
- * substring formed by splitting the source on boundaries formed by the string
- * delimiter. One use case is for building the theme and color configuration
+ * This plugin creates an array of strings by splitting the source parameter on
+ * boundaries formed by the delimiter.
+ *
+ * One use case is for building the theme and color configuration
  * setting name from the Drupal 7 variable name. For example, to convert
  * theme_bartik_settings to bartik.settings.
  *
- * Available configuration keys
+ * Available configuration keys:
  *   - source: The source string.
  *   - limit: (optional)
- *     - If limit is set and positive, the returned array will contain a maximum of limit elements with the last element containing the rest of string.
- *     - If the limit parameter is negative, all components except the last -limit are returned.
+ *     - If limit is set and positive, the returned array will contain a maximum
+ *        of limit elements with the last element containing the rest of string.
+ *     - If limit is set and negative, all components except the last -limit are
+ *        returned.
  *     - If the limit parameter is zero, then this is treated as 1.
- *   - delimiter: (optional) The boundary string.
+ *   - delimiter: The boundary string.
  *
  * Example:
  *
@@ -49,23 +52,7 @@
 class Explode extends ProcessPluginBase {
 
   /**
-   * Performs the associated process.
-   *
-   * @param string $value
-   *   The input string.
-   * @param \Drupal\migrate\MigrateExecutableInterface $migrate_executable
-   *   The migration in which this process is being executed.
-   * @param \Drupal\migrate\Row $row
-   *   The row from the source to process.
-   * @param string $destination_property
-   *   The destination property currently worked on. This is only used together
-   *   with the $row above.
-   *
-   * @return array
-   *   The array of sub strings created by splitting the input on boundaries
-   *   formed by the string delimiter.
-   *
-   * @throws \Drupal\migrate\MigrateException
+   * {@inheritdoc}
    */
   public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
     if (is_string($value)) {