diff --git a/src/meta_plugin/binary.rs b/src/meta_plugin/binary.rs
index 0c11cff..78714fd 100644
--- a/src/meta_plugin/binary.rs
+++ b/src/meta_plugin/binary.rs
@@ -45,16 +45,17 @@ impl BinaryMetaPlugin {
             .and_then(|v| v.as_u64())
             .unwrap_or(PIPESIZE as u64) as usize;
         
+        let mut base = crate::meta_plugin::BaseMetaPlugin::new();
+        base.outputs = final_outputs;
+        base.options = final_options;
+        
         BinaryMetaPlugin {
             meta_name: "binary".to_string(),
             buffer: Vec::new(),
             max_buffer_size,
             is_saved: false,
             item_id: None,
-            base: crate::meta_plugin::BaseMetaPlugin {
-                outputs: final_outputs,
-                options: final_options,
-            },
+            base,
         }
     }
     
@@ -145,10 +146,6 @@ impl MetaPlugin for BinaryMetaPlugin {
         self.base.options_mut()
     }
     
-    fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.base.options
-    }
-    
     fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> Result<()> {
         if let Some(max_buffer_size) = options.get("max_buffer_size") {
             if let Some(size) = max_buffer_size.as_u64() {
diff --git a/src/meta_plugin/magic.rs b/src/meta_plugin/magic.rs
index 7de51c7..a66b761 100644
--- a/src/meta_plugin/magic.rs
+++ b/src/meta_plugin/magic.rs
@@ -14,8 +14,7 @@ pub struct MagicFileMetaPlugin {
     is_saved: bool,
     item_id: Option<i64>,
     cookie: Option<Cookie>,
-    outputs: std::collections::HashMap<String, serde_yaml::Value>,
-    options: std::collections::HashMap<String, serde_yaml::Value>,
+    base: crate::meta_plugin::BaseMetaPlugin,
 }
 
 impl MagicFileMetaPlugin {
@@ -48,14 +47,17 @@ impl MagicFileMetaPlugin {
             .and_then(|v| v.as_u64())
             .unwrap_or(PIPESIZE as u64) as usize;
         
+        let mut base = crate::meta_plugin::BaseMetaPlugin::new();
+        base.outputs = final_outputs;
+        base.options = final_options;
+        
         MagicFileMetaPlugin {
             buffer: Vec::new(),
             max_buffer_size,
             is_saved: false,
             item_id: None,
             cookie: None,
-            outputs: final_outputs,
-            options: final_options,
+            base,
         }
     }
     
@@ -108,7 +110,7 @@ impl MagicFileMetaPlugin {
                     if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
                         name, 
                         result, 
-                        &self.outputs
+                        self.base.outputs()
                     ) {
                         metadata.push(meta_data);
                     }
@@ -199,11 +201,11 @@ impl MetaPlugin for MagicFileMetaPlugin {
     }
     
     fn outputs(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        &self.outputs
+        self.base.outputs()
     }
     
     fn outputs_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.outputs
+        self.base.outputs_mut()
     }
     
     fn default_outputs(&self) -> Vec<String> {
@@ -217,11 +219,11 @@ impl MetaPlugin for MagicFileMetaPlugin {
     }
     
     fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        &self.options
+        self.base.options()
     }
     
     fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.options
+        self.base.options_mut()
     }
 }
 
diff --git a/src/meta_plugin/system.rs b/src/meta_plugin/system.rs
index 1c47e93..02092bd 100644
--- a/src/meta_plugin/system.rs
+++ b/src/meta_plugin/system.rs
@@ -91,8 +91,7 @@ impl MetaPlugin for CwdMetaPlugin {
 pub struct UidMetaPlugin {
     meta_name: String,
     is_saved: bool,
-    outputs: std::collections::HashMap<String, serde_yaml::Value>,
-    options: std::collections::HashMap<String, serde_yaml::Value>,
+    base: crate::meta_plugin::BaseMetaPlugin,
 }
 
 impl UidMetaPlugin {
@@ -110,7 +109,7 @@ impl UidMetaPlugin {
         
         // Start with default outputs
         let mut final_outputs = std::collections::HashMap::new();
-        let default_outputs = Self::default().default_outputs();
+        let default_outputs = vec!["uid".to_string()];
         for output_name in default_outputs {
             final_outputs.insert(output_name.clone(), serde_yaml::Value::String(output_name));
         }
@@ -120,11 +119,14 @@ impl UidMetaPlugin {
             }
         }
         
+        let mut base = crate::meta_plugin::BaseMetaPlugin::new();
+        base.outputs = final_outputs;
+        base.options = final_options;
+        
         UidMetaPlugin {
             meta_name: "uid".to_string(),
             is_saved: false,
-            outputs: final_outputs,
-            options: final_options,
+            base,
         }
     }
     
@@ -191,8 +193,7 @@ impl MetaPlugin for UidMetaPlugin {
 pub struct UserMetaPlugin {
     meta_name: String,
     is_saved: bool,
-    outputs: std::collections::HashMap<String, serde_yaml::Value>,
-    options: std::collections::HashMap<String, serde_yaml::Value>,
+    base: crate::meta_plugin::BaseMetaPlugin,
 }
 
 impl UserMetaPlugin {
@@ -210,7 +211,7 @@ impl UserMetaPlugin {
         
         // Start with default outputs
         let mut final_outputs = std::collections::HashMap::new();
-        let default_outputs = Self::default().default_outputs();
+        let default_outputs = vec!["user".to_string()];
         for output_name in default_outputs {
             final_outputs.insert(output_name.clone(), serde_yaml::Value::String(output_name));
         }
@@ -220,11 +221,14 @@ impl UserMetaPlugin {
             }
         }
         
+        let mut base = crate::meta_plugin::BaseMetaPlugin::new();
+        base.outputs = final_outputs;
+        base.options = final_options;
+        
         UserMetaPlugin {
             meta_name: "user".to_string(),
             is_saved: false,
-            outputs: final_outputs,
-            options: final_options,
+            base,
         }
     }
     
@@ -259,11 +263,11 @@ impl MetaPlugin for UserMetaPlugin {
     }
     
     fn outputs(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        &self.outputs
+        self.base.outputs()
     }
     
     fn outputs_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.outputs
+        self.base.outputs_mut()
     }
     
     fn default_outputs(&self) -> Vec<String> {
@@ -275,15 +279,11 @@ impl MetaPlugin for UserMetaPlugin {
     }
     
     fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        &self.base.options
+        self.base.options()
     }
     
     fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.base.options
-    }
-    
-    fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
-        &mut self.options
+        self.base.options_mut()
     }
 }