feat: update highlevel

wfassoc/src/highlevel.rs

@@ -167,17 +167,43 @@ pub struct Program {
 impl TryFrom<Schema> for Program {
     type Error = ParseProgramError;
 
-    fn try_from(value: Schema) -> std::result::Result<Self, Self::Error> {
+    fn try_from(value: Schema) -> Result<Self, Self::Error> {
         Self::new(value)
     }
 }
 
 impl Program {
+    /// Try creating Program from Schema.
     pub fn new(schema: Schema) -> Result<Self, ParseProgramError> {
         todo!()
     }
 }
 
+impl Program {
+    /// Register this application.
+    /// 
+    /// If there is registration of this application,
+    /// this function will return error.
+    pub fn register(&mut self, scope: Scope) -> Result<(), ProgramError> {
+        todo!()
+    }
+
+    /// Unregister this application.
+    /// 
+    /// If there is no registration of this application,
+    /// this function will return error.
+    pub fn unregister(&mut self, scope: Scope) -> Result<(), ProgramError> {
+        todo!()
+    }
+
+    /// Check whether this application has been registered in given view.
+    ///
+    /// Please note that this is a rough check and do not validate any data.
+    pub fn is_registered(&self, view: View) -> Result<bool, ProgramError> {
+        todo!()
+    }
+}
+
 // endregion
 
 // region: Program Internals