diff --git a/core/modules/migrate/src/Plugin/migrate/process/StaticMap.php b/core/modules/migrate/src/Plugin/migrate/process/StaticMap.php
index 604c024..1d68f35 100644
--- a/core/modules/migrate/src/Plugin/migrate/process/StaticMap.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/StaticMap.php
@@ -47,26 +47,44 @@
  * @code
  * process:
  *   id:
- *   plugin: static_map
- *     source:
- *       - module
- *       - delta
- *      map:
- *        filter:
- *          0: filter_html_escape
- *          1: filter_autop
- *          2: filter_url
- *          3: filter_htmlcorrector
- *          4: filter_html_escape
- *        php:
- *          0: php_code
+ *     plugin: static_map
+ *       source:
+ *         - module
+ *         - delta
+ *        map:
+ *          filter:
+ *            0: filter_html_escape
+ *            1: filter_autop
+ *            2: filter_url
+ *            3: filter_htmlcorrector
+ *            4: filter_html_escape
+ *          php:
+ *            0: php_code
  * @endcode
  *
  * If the value of the source properties module and delta are "filter" and "2"
  * respectively, then the returned value will be "filter_url". By default, if a
- * value is not found in the map, an exception is thrown. When static_map is
- * used to just rename a few things and leave the others, a "bypass: true"
- * option can be added. In this case, the source value is used unchanged.
+ * value is not found in the map, an exception is thrown.
+ *
+ * When static_map is used to just rename a few things and leave the others, a
+ * "bypass: true" option can be added. In this case, the source value is used
+ * unchanged, e.g.:
+ *
+ * @code
+ * process:
+ *   bar:
+ *     plugin: static_map
+ *     source: foo
+ *       map:
+ *         from: to
+ *         this: that
+ *       bypass: TRUE
+ * @endcode
+ *
+ * If the value of the source property "foo" is "from" then the returned value
+ * will be "to", but if the value of "foo" is "another" (a value that is not in
+ * the map) then the source value is used unchanged so the returned value will
+ * be "from" because "bypass" is set to TRUE.
  *
  * @code
  * process:
@@ -79,9 +97,9 @@
  *       default_value: bar
  * @endcode
  *
- * If the lookup fails, this default_value is used instead. Note that using the
- * default value plugin after would not work as the pipeline has a value at this
- * point: the value of the source specified for the static_map.
+ * If the value of the source property "foo" is "yet_another" (a value that is
+ * not in the map) then the default_value is used so the returned value will
+ * be "bar".
  *
  * @see \Drupal\migrate\Plugin\MigrateProcessInterface
  *