jgvariant-tool: Add 'ostree summary add-static-delta' command.

Change-Id: I3b318269c4c85b581d6639fe5ec6a14bf2604ad4
diff --git a/jgvariant-tool/src/main/java/module-info.java b/jgvariant-tool/src/main/java/module-info.java
index e62808e..6faa226 100644
--- a/jgvariant-tool/src/main/java/module-info.java
+++ b/jgvariant-tool/src/main/java/module-info.java
@@ -11,7 +11,9 @@
  *
  * <p>The {@link eu.mulk.jgvariant.tool.Main} class defines the entry point of the tool.
  *
- * <p>Usage example (dumping the contents of an OSTree summary file):
+ * <h2>Usage Examples</h2>
+ *
+ * <h3>Dumping the contents of an OSTree summary file</h3>
  *
  * {@snippet lang="sh" :
  * $ jgvariant ostree summary read ./jgvariant-ostree/src/test/resources/ostree/summary
@@ -50,6 +52,21 @@
  *     }
  * }
  * }
+ *
+ * <h3>Adding a static delta to an OSTree summary file</h3>
+ *
+ * <p>Static delta <code>3...</code> (in hex), between commits <code>1...</code> and <code>2...
+ * </code>:
+ *
+ * {@snippet lang="sh" :
+ * $ jgvariant ostree summary add-static-delta ./jgvariant-ostree/src/test/resources/ostree/summary 3333333333333333333333333333333333333333333333333333333333333333 2222222222222222222222222222222222222222222222222222222222222222 1111111111111111111111111111111111111111111111111111111111111111
+ * }
+ *
+ * <p>Static delta <code>3...</code> (in hex), between the empty commit and <code>2...</code>:
+ *
+ * {@snippet lang="sh" :
+ * $ jgvariant ostree summary add-static-delta ./jgvariant-ostree/src/test/resources/ostree/summary 4444444444444444444444444444444444444444444444444444444444444444 2222222222222222222222222222222222222222222222222222222222222222
+ * }
  */
 module eu.mulk.jgvariant.tool {
   requires transitive eu.mulk.jgvariant.ostree;