From cf8b5af23d745a89a22e9de48a07ad57acac8b38 Mon Sep 17 00:00:00 2001
From: Kiran N' Bishwa <kirannbishwa01@gmail.com>
Date: Tue, 16 May 2017 13:04:40 -0400
Subject: [PATCH] Update model.py

Added the method `add_field`. Taken from https://github.com/jamescasbon/PyVCF/blob/wip/82-add-call-data/vcf/model.py
---
 vcf/model.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vcf/model.py b/vcf/model.py
index 34a4d17..73be2be 100644
--- a/vcf/model.py
+++ b/vcf/model.py
@@ -116,6 +116,10 @@ def is_het(self):
         if not self.called:
             return None
         return self.gt_type == 1
+    
+    def add_field(self, name, value):
+        new_cls = make_calldata_tuple(list(self.data._fields) + [name])
+        self.data = new_cls._make(list(iter(self.data)) + [value])
 
     @property
     def is_filtered(self):