Optionalcompressiontrue if entries can be compressed with the method. It is undefined when the support is
unknown, i.e. for a codec registered with CodecDefinition#codecURI whose module has not
been imported yet.
The compression method stored in zip entry headers (e.g. 8 for Deflate).
Optionaldecompressiontrue if entries can be decompressed with the method. It is undefined when the support is
unknown, i.e. for a codec registered with CodecDefinition#codecURI whose module has not
been imported yet.
true if the method comes from a codec registered with registerCodec.
Represents the support of a compression method, see getSupportedCompressionMethods.