From 145e9e5f8853072c47b3cd004d0a3783810c9372 Mon Sep 17 00:00:00 2001
From: "Thomas A. Christensen II" <25492070+MillironX@users.noreply.github.com>
Date: Mon, 11 Jul 2022 12:51:35 -0500
Subject: [PATCH] Add private alternate base getter for Deletion

---
 src/SequenceVariation.jl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/SequenceVariation.jl b/src/SequenceVariation.jl
index 8ad2972..3bb4f73 100644
--- a/src/SequenceVariation.jl
+++ b/src/SequenceVariation.jl
@@ -480,6 +480,14 @@ function _refbases(d::Deletion, reference::S, pos::UInt) where S <: BioSequence
     end
 end
 
+function _altbases(d::Deletion, reference::S, pos::UInt) where S <: BioSequence
+    if pos == 1
+        return S([reference[pos+1]])
+    else
+        return S([reference[pos-1]])
+    end
+end
+
 export Insertion,
     Deletion,
     Substitution,