// Given
            when(mockResource.openInputStream()).thenReturn(mockInputStream);
            when(mockResource.openInputStream(anyInt())).thenReturn(mockInputStream);
            when(mockResource.openInputStream(anyInt(), anyInt(), anyInt())).thenReturn(mockInputStream);

            // When
            InputStream is1 = mockResource.openInputStream();
            InputStream is2 = mockResource.openInputStream(1);

 *
 * <p>This class is intended to be used in the following pattern:
 *
 * {@snippet :
 * Closer closer = Closer.create();
 * try {
 *   InputStream in = closer.register(openInputStream());
 *   OutputStream out = closer.register(openOutputStream());
 *   // do stuff
 * } catch (Throwable e) {
 *   // ensure that any checked exception types other than IOException that could be thrown are

     */
    InputStream openInputStream(int sharing) throws CIFSException;

    /**
     * Opens an input stream reading the file (read only, sharable)
     *
     * @return input stream, needs to be closed when finished
     * @throws CIFSException if an error occurs accessing the resource
     */
    InputStream openInputStream() throws CIFSException;

    /**