diff --git a/src/meta_plugin.rs b/src/meta_plugin.rs
index d8cca59..626a6da 100644
--- a/src/meta_plugin.rs
+++ b/src/meta_plugin.rs
@@ -41,6 +41,10 @@ pub trait MetaPlugin {
         true
     }
     
+    fn is_internal(&self) -> bool {
+        false
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>>;
     fn finalize(&mut self) -> io::Result<String>;
 
diff --git a/src/meta_plugin/program.rs b/src/meta_plugin/program.rs
index 5ef27c1..19c1cc1 100644
--- a/src/meta_plugin/program.rs
+++ b/src/meta_plugin/program.rs
@@ -40,6 +40,10 @@ impl MetaPlugin for MetaPluginProgram {
     fn is_supported(&self) -> bool {
         self.supported
     }
+    
+    fn is_internal(&self) -> bool {
+        false
+    }
 
     fn create(&self) -> Result<Box<dyn Write>> {
         debug!("META: Writing using {:?}", *self);
diff --git a/src/meta_plugin/system.rs b/src/meta_plugin/system.rs
index 2a814d1..447e25e 100644
--- a/src/meta_plugin/system.rs
+++ b/src/meta_plugin/system.rs
@@ -248,6 +248,10 @@ impl BinaryMetaPlugin {
 }
 
 impl MetaPlugin for BinaryMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -280,6 +284,10 @@ impl CwdMetaPlugin {
 }
 
 impl MetaPlugin for CwdMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -314,6 +322,10 @@ impl UidMetaPlugin {
 }
 
 impl MetaPlugin for UidMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -345,6 +357,10 @@ impl UserMetaPlugin {
 }
 
 impl MetaPlugin for UserMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -379,6 +395,10 @@ impl GidMetaPlugin {
 }
 
 impl MetaPlugin for GidMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -410,6 +430,10 @@ impl GroupMetaPlugin {
 }
 
 impl MetaPlugin for GroupMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -444,6 +468,10 @@ impl ShellMetaPlugin {
 }
 
 impl MetaPlugin for ShellMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -478,6 +506,10 @@ impl ShellPidMetaPlugin {
 }
 
 impl MetaPlugin for ShellPidMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -512,6 +544,10 @@ impl KeepPidMetaPlugin {
 }
 
 impl MetaPlugin for KeepPidMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -543,6 +579,10 @@ impl HostnameMetaPlugin {
 }
 
 impl MetaPlugin for HostnameMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }
@@ -577,6 +617,10 @@ impl FullHostnameMetaPlugin {
 }
 
 impl MetaPlugin for FullHostnameMetaPlugin {
+    fn is_internal(&self) -> bool {
+        true
+    }
+    
     fn create(&self) -> Result<Box<dyn Write>> {
         Ok(Box::new(io::sink()))
     }