pub trait InputStreamImplExt: ObjectSubclass {
fn parent_read(
&self,
stream: &Self::Type,
buffer: &mut [u8],
cancellable: Option<&Cancellable>
) -> Result<usize, Error>;
fn parent_close(
&self,
stream: &Self::Type,
cancellable: Option<&Cancellable>
) -> Result<(), Error>;
fn parent_skip(
&self,
stream: &Self::Type,
count: usize,
cancellable: Option<&Cancellable>
) -> Result<usize, Error>;
}