diff --git a/core/modules/migrate/src/Plugin/migrate/process/FileCopy.php b/core/modules/migrate/src/Plugin/migrate/process/FileCopy.php
index db9fd10..87b3d6a 100644
--- a/core/modules/migrate/src/Plugin/migrate/process/FileCopy.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/FileCopy.php
@@ -16,26 +16,31 @@
 /**
  * Copies or moves a local file from one place into another.
  *
- * The file_copy process plugin ...
+ * The file_copy process plugin copies a file from one location to another.
+ * Optionally, the file can be moved, reused, or set to be automatically renamed
+ * if a duplicate exists.
  *
  * The source value is an array of two values
- *   - source: The source path or URI.
- *   - destination: The destination path or URI.
+ *   - source: The source path or URI, e.g. /path/to/foo.txt or
+ *     public://bar.txt.
+ *   - destination: The destination path or URI, e.g. /path/to/bar.txt or
+ *     public://foo.txt.
  *
  * Available configuration keys
- *   - move: (optional) If set the move the file otherwise copy the file.
- *   - rename: (optional) If set rename the file.
+ *   - move: (optional) Boolean, if TRUE, move the file otherwise copy the file.
+ *     Defaults to FALSE.
+ *   - rename: (optional) Boolean, if TRUE, rename the file. Defaults to FALSE.
+ *   - reuse: (optional) Boolean, if TRUE, file can be reused. Defaults to
+ *     FALSE.
  *
  * Examples:
  *
  * @code
  * process:
- *   new_text_field:
- *     plugin: concat
- *     source:
- *       - foo
- *       - bar
- *     delimiter: /
+ *   path_to_file:
+ *     plugin: file_copy
+ *     source: /path/to/file.png
+ *     destination: /new/path/to/file.png
  * @endcode
  *
  * @see \Drupal\migrate\Plugin\MigrateProcessInterface