Codecs allow you to create compressed input and output streams.
The Codec$create() factory method takes the following arguments:
type: string name of the compression method. Possible values are
"uncompressed", "snappy", "gzip", "brotli", "zstd", "lz4", "lzo", or
"bz2". type may be upper- or lower-cased. Not all methods may be
available; support depends on build-time flags for the C++ library.
See codec_is_available(). Most builds support at least "snappy" and
"gzip". All support "uncompressed".
compression_level: compression level, the default value (NA) uses the
default compression level for the selected compression type.