From a5178b7425aab349bc1f2f76379b28aed5308380 Mon Sep 17 00:00:00 2001
From: Hamed Ghasemzadeh <evgnomon@gmail.com>
Date: Sun, 4 Dec 2016 16:45:13 +0330
Subject: [PATCH] caption is corrected for files

---
 configs.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configs.go b/configs.go
index aff0cd9..5524207 100644
--- a/configs.go
+++ b/configs.go
@@ -349,6 +349,7 @@ func (config AudioConfig) method() string {
 // DocumentConfig contains information about a SendDocument request.
 type DocumentConfig struct {
 	BaseFile
+	Caption  string
 }
 
 // values returns a url.Values representation of DocumentConfig.
@@ -360,6 +361,10 @@ func (config DocumentConfig) values() (url.Values, error) {
 
 	v.Add(config.name(), config.FileID)
 
+	if config.Caption != "" {
+		v.Add("caption", config.Caption)
+	}
+
 	return v, nil
 }