Merge "Document how a plugin can get its name injected"

Documentation/dev-plugins.txt

@@ -174,6 +174,23 @@ manifest_entries = [
 ]
 ----
 
+A plugin can get its own name injected at runtime:
+
+[source,java]
+----
+public class MyClass {
+
+  private final String pluginName;
+
+  @Inject
+  public MyClass(@PluginName String pluginName) {
+    this.pluginName = pluginName;
+  }
+
+  ...
+}
+----
+
 [[reload_method]]
 Reload Method
 ~~~~~~~~~~~~~