zlib::Flush

Flush option.

enum Flush

Name	Description
`none`	No policy.
`block`	Flush all pending output on a bit boundary and hold up to seven bits.
`partial`	Flush all pending output on a bit boundary.
`sync`	Flush all pending output on a byte boundary.
`full`	Flush all pending output on a byte boundary and reset state.
`finish`	Compress the input left in a single step.
`trees`	Flush output as in `Flush::block` or at the end of each deflate block header.

The allowed flush values for the deflate_stream::write and inflate_stream::write functions.