fn inner(&mut self) -> Option<&mut ResponseHead> {
        if self.err.is_some() {
            return None;
        }

        self.head.as_deref_mut()
    }
/// Get access to the inner response head if there has been no error.
Get access to the inner response head if there has been no error.
Get access to the inner response head if there has been no error .
fn inner(&mut self) -> Option<&mut ResponseHead> {
        if self.err.is_some() {
            return None;
        }
        self.head.as_deref_mut()
    }
fn inner ( & mut self ) -> Option < & mut ResponseHead > { if self . err . is_some ( ) { return None ; } self . head . as_deref_mut ( ) }
Get access to the inner response head if there has been no error.
Get access to the inner response head if there has been no error .
&mut self
&mut self