See what it would look like for Blob to extend Object;

api/init.lua

@@ -3970,6 +3970,7 @@ return {
             "lovr.data.newBlob",
             "lovr.filesystem.newBlob"
           },
+          extends = "Object",
           methods = {
             {
               name = "getSize",

api/lovr/data/Blob/init.lua

@@ -13,6 +13,7 @@ return {
 
     A Blob's size cannot be changed once it is created.
   ]],
+  extends = 'Object',
   constructors = { 'lovr.data.newBlob', 'lovr.filesystem.newBlob' },
   methods = {
     'Blob:getSize',