Finish subfactory interface

factorio-blueprint/src/abstraction.rs

@@ -164,7 +164,7 @@ pub enum EntityType {
     },
     Production {
         name: String,
-        recipe: String,
+        recipe: Option<String>,
         size: Position,
     },
     Rail {
@@ -276,7 +276,7 @@ impl Entity {
 
     pub fn new_production(
         name: impl AsRef<str>,
-        recipe: impl AsRef<str>,
+        recipe: Option<impl AsRef<str>>,
         position: Position,
         direction: Direction,
         size: Position,
@@ -284,7 +284,7 @@ impl Entity {
         Self::new(
             EntityType::Production {
                 name: name.as_ref().to_owned(),
-                recipe: recipe.as_ref().to_owned(),
+                recipe: recipe.map(|s| s.as_ref().to_owned()),
                 size,
             },
             position,
@@ -384,7 +384,7 @@ impl Entity {
                 name: _,
                 recipe,
                 size: _,
-            } => Some(recipe.clone()),
+            } => recipe.clone(),
             _ => None,
         }
     }