* All the API functions are stubbed out, now they just need to be filled in
with details, so they actually do what they are supposed to.
* Need to make sure the correct errors are getting returned.
* Need to back through and fix all occurences of the `Metadata` type to be what
it is actually supposed to be. Here are all the `Metadata` types I have
encountered so far:
* FileMetadata
* FolderMetadata
* PathLinkMetadata
* SharedFolderMetadata
* LinkMetadata
* more?