Return the number of bytes of output space still available. Output may be limited by the amount of space in the output buffer or the amount of data available in the current input buffer. \param buffer is where compressed bytes are stored \param sz is the size, in bytes, of the buffer \param finish is set to \b true if this is the final buffer to add to the stream \return the number of output byte
source not stored for this graph (policy: none)
no test coverage detected