Define general mime type and file name

Author: pengrad

src/main/java/com/pengrad/telegrambot/request/BaseRequest.java

@@ -46,10 +46,10 @@ public boolean isMultipart() {
     }
 
     public String getFileName() {
-        return "file.txt";
+        return ContentTypes.GENERAL_FILE_NAME;
     }
 
     public String getContentType() {
-        return "application/x-www-form-urlencoded";
+        return ContentTypes.GENERAL_MIME_TYPE;
     }
 }

src/main/java/com/pengrad/telegrambot/request/ContentTypes.java

@@ -18,4 +18,6 @@ abstract public class ContentTypes {
     public static final String VIDEO_FILE_NAME = "file.mp4";
     public static final String VOICE_FILE_NAME = "file.ogg";
 
+    public static final String GENERAL_MIME_TYPE = "application/x-www-form-urlencoded";
+    public static final String GENERAL_FILE_NAME = DOC_FILE_NAME;
 }