Make set_file_source private

We don't want to expose the `FileDataSource` enum for now.

Author: phil-opp

src/lib.rs

@@ -78,20 +78,18 @@ impl DiskImageBuilder {
     }
 
     /// Add a file source to the disk image
-    pub fn set_file_source(&mut self, destination: &str, source: FileDataSource) -> &mut Self {
+    fn set_file_source(&mut self, destination: &str, source: FileDataSource) -> &mut Self {
         let destination = destination.to_string();
         self.files.insert(destination, source);
         self
     }
 
     /// Add a file with the specified bytes to the disk image
-    /// NOTE: This is just a convenience wrapper around set_file_source
     pub fn set_file_contents(&mut self, destination: &str, data: &[u8]) -> &mut Self {
         self.set_file_source(destination, FileDataSource::Data(data.to_vec()))
     }
 
     /// Add a file with the specified source file to the disk image
-    /// NOTE: This is just a convenience wrapper around set_file_source
     pub fn set_file(&mut self, destination: &str, file_path: &Path) -> &mut Self {
         self.set_file_source(destination, FileDataSource::File(file_path.to_path_buf()))
     }