Extensions Docs Server: Support APIs with properties

tools/json_schema_compiler/model.py

Index: tools/json_schema_compiler/model.py
diff --git a/tools/json_schema_compiler/model.py b/tools/json_schema_compiler/model.py
index 10890ed6711b92149a250e02456f1788fc57abb3..63973d43405e939a1416c0b51d339807005d8a16 100644
--- a/tools/json_schema_compiler/model.py
+++ b/tools/json_schema_compiler/model.py
@@ -111,9 +111,8 @@ class Callback(object):
   def __init__(self, parent, json):
     params = json['parameters']
     self.parent = parent
-    self.optional = False
-    if 'optional' in json:
-      self.optional = json['optional'] == True
+    self.description = json.get('description')
+    self.optional = json.get('optional', False)
     self.params = []
     if len(params) == 0:
       return
@@ -184,6 +183,7 @@ class Property(object):
     self._unix_name = UnixName(self.name)
     self._unix_name_used = False
     self.optional = json.get('optional', False)
+    self.functions = []
     self.has_value = False
     self.description = json.get('description')
     self.parent = parent