cleaning warnings

src/services/copy.rs

@@ -41,7 +41,7 @@ impl Copy {
         self.api_builder.send().await
     }
 
-    pub fn overwrite(&mut self, overwrite: bool) -> &mut Copy {
+    pub fn _overwrite(&mut self, overwrite: bool) -> &mut Copy {
         self.api_builder.set_header("Overwrite", HeaderValue::from_str({
             if overwrite { "T" } else { "F" }
         }).unwrap());

src/services/downloader.rs

@@ -42,7 +42,7 @@ impl Downloader {
         self
     }
 
-    pub fn add_file(&mut self, file: ObjProps) -> &mut Downloader {
+    pub fn _add_file(&mut self, file: ObjProps) -> &mut Downloader {
         self.files.push(file);
         self
     }

src/services/move.rs

@@ -41,7 +41,7 @@ impl Move {
         self.api_builder.send().await
     }
 
-    pub fn overwrite(&mut self, overwrite: bool) -> &mut Move {
+    pub fn _overwrite(&mut self, overwrite: bool) -> &mut Move {
         self.api_builder.set_header("Overwrite", HeaderValue::from_str({
             if overwrite { "T" } else { "F" }
         }).unwrap());