Moved addition into action.

src/document/create.rs

@@ -811,9 +811,9 @@ impl DocumentFile {
 mod document_files {
     use super::*;
     use crate::{
-        action::Operand,
+        action::{Addition, Operand},
         document::field::FieldType,
-        message::wrapper::{Addition, Delete},
+        message::wrapper::Delete,
         name::{Name, Names},
         support_tests::TIMEOUT,
     };