From 0f053e66817e02b46a6d210b66aa52f79ae2763d Mon Sep 17 00:00:00 2001
From: jrudz <rudzinski@mpip-mainz.mpg.de>
Date: Wed, 10 Jul 2024 16:00:31 +0200
Subject: [PATCH] fixed norm in schema plugins

---
 docs/schema_plugins.md | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/docs/schema_plugins.md b/docs/schema_plugins.md
index 28ccd34..1b8073e 100644
--- a/docs/schema_plugins.md
+++ b/docs/schema_plugins.md
@@ -47,9 +47,6 @@ Suppose you are developing a parser for a well-defined schema specified within t
 ```
 hdf5_schema
     +-- version: Integer[3]
-    \-- author
-    |    +-- name: String[]
-    |    +-- (email: String[])
     \-- hdf5_generator
     |    +-- name: String[]
     |    +-- version: String[]
@@ -410,13 +407,17 @@ The normalization function within each schema section definition allows us to pe
             if not self.contributions:
                 return
 
+            value = self.value
+            unknown_energy_exists = False
             for contribution in self.contributions:
                 if not contribution.value:
                     continue
-                value = self.value - contribution.value
-                self.contributions.append(UnknownEnergy(value=value))
-
+                if contribution.name == 'UnknownEnergy':
+                    unknown_energy_exists = True
 
+                value -= contribution.value
+            if not unknown_energy_exists:
+                self.contributions.append(UnknownEnergy(value=value))
     ```
 
 !!! abstract "Assignment 4.6"