exe/cqhttp-dbus in CQHTTP-2.1.0 vs exe/cqhttp-dbus in CQHTTP-2.2.0

@@ -9,11 +9,14 @@
   def initialize(*args)
     @cqhttp = CQHTTP::API.new
     super
   end
   dbus_interface 'org.dastudio.cqhttp' do
-    dbus_method :call, 'in func:s, in args:s' do |func, args|
-      @cqhttp.send func, JSON.parse(args, symbolize_names: true)
+    dbus_method :call, 'in func:s, in args:s, out json:s' do |func, args|
+      JSON.pretty_generate @cqhttp.send func, JSON.parse(
+        args,
+        symbolize_names: true
+      )
     end
 
     %i[
       message
       private