The extension has three methods:

CompressFromBinaryData

CompressFromDistributedFiles

CompressFromFolder

All of the above methods have a common argument 'CompressionLevel'. Values of this parameters are:

None: No compression will be performed on the files. Result will only be a zip file with original file size.
Optimal: Files will be optimally compressed even if the operation takes a little longer to complete. This is recommended.
Fast: Operation will be completed fast even if the files are not optimally compressed.

CompressFromBinaryData takes two arguments:
FileList: List of binary data and file name.
CompressionLevel: ('none', 'optimal' or 'fast')

CompressFromDistributedFiles takes two arguments:
FileList: List of files with file paths.
CompressionLevel: ('none', 'optimal' or 'fast')

CompressFromFolder takes two arguments:
FolderPath: Folder path of files to be compressed.
CompressionLevel: ('none', 'optimal' or 'fast')

All the above method returns record with following attributes:

IsSucceeded: Boolean variable representing if the compression was done successfully or not.
Message: Appropriate message as per success or failure of the compression operation.
ZipData: Zip file as binary data.