Add docs for CodegenInterface

fredemmott · fredemmott · commit 31f12a15dead · 2017-02-22T20:14:25.000-08:00
diff --git a/docs/_data/nav_docs.yml b/docs/_data/nav_docs.yml
@@ -19,6 +19,7 @@
   - id: classes-codegen-type
   - id: classes-codegen-shape
   - id: classes-codegen-class-base
+  - id: classes-codegen-interface
   - id: classes-codegen-class
 
 # n title:, 1 items: per title:, n id: per items:
diff --git a/docs/_docs/classes/codegen-interface.md b/docs/_docs/classes/codegen-interface.md
@@ -0,0 +1,10 @@
+---
+docid: classes-codegen-interface
+title: CodegenInterface
+layout: docs
+permalink: /docs/classes/CodegenInterface/
+---
+
+A `CodegenInterface` is created with `$factory->codegenInterface(name)`; it can
+extend other interfaces via `->addInterface($codegen_implements_interface)`, and
+does not add any other features to `CodegenClassBase`.
