Stub the ConnectionManager interface

This commit contains autogenerated telepathy DBUS code and the output
of `cargo new telepathy-delta`. It's pretty chill.

Cargo.lock

@@ -38,7 +38,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
 
 [[package]]
-name = "telepathy-padfoot"
+name = "telepathy-delta"
 version = "0.1.0"
 dependencies = [
  "anyhow",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
-name = "telepathy-padfoot"
+name = "telepathy-delta"
 version = "0.1.0"
-authors = ["Nick Thomas <me@ur.gs>"]
+authors = ["Nick Thomas <nick@gitlab.com>"]
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/delta/connection_manager.rs

@@ -19,8 +19,6 @@ impl dbus::tree::DataType for CMData {
 
 const PROTO: &'static str = "delta";
 
-pub type Dict = HashMap<String, arg::Variant<Box<dyn arg::RefArg + 'static>>>;
-
 impl telepathy::ConnectionManager for ConnectionManager {
     fn get_parameters(
         &self,
@@ -34,7 +32,7 @@ impl telepathy::ConnectionManager for ConnectionManager {
         )>,
         tree::MethodErr,
     > {
-        Err(tree::MethodErr::no_arg()) // FIXME: should be NotImplemented
+        Err(tree::MethodErr::no_arg())
     }
 
     fn list_protocols(&self) -> Result<Vec<String>, tree::MethodErr> {
@@ -49,13 +47,13 @@ impl telepathy::ConnectionManager for ConnectionManager {
         Err(tree::MethodErr::no_arg())
     }
 
-    fn protocols(&self) -> Result<HashMap<String, Dict>, tree::MethodErr> {
+    fn protocols(
-        let mut hm = HashMap::new();
+        &self,
-        let mut props = Dict::new();
+    ) -> Result<
-
+        HashMap<String, HashMap<String, arg::Variant<Box<dyn arg::RefArg + 'static>>>>,
-        hm.insert(PROTO.to_string(), props);
+        tree::MethodErr,
-
+    > {
-        Ok(hm)
+        Err(tree::MethodErr::no_arg())
     }
 
     fn interfaces(&self) -> Result<Vec<String>, tree::MethodErr> {

src/delta/protocol.rs

@@ -1,2 +1 @@
 pub struct Protocol {}
-