diff --git a/__crypto/simple_contract/src/cmd.rs b/__crypto/simple_contract/src/cmd.rs
index 8cdc3f5..3a0da05 100644
--- a/__crypto/simple_contract/src/cmd.rs
+++ b/__crypto/simple_contract/src/cmd.rs
@@ -4,6 +4,8 @@ pub type CommandError = XResult<()>;
 
 pub trait Command {
     fn name(&self) -> &str;
+    
     fn subcommand<'a>(&self) -> App<'a, 'a>;
+    
     fn run(&self, arg_matches: &ArgMatches, _: &ArgMatches) -> CommandError;
 }