from msgpack import unpackb

cdef class Credentials:

    def __init__(self, str email, str password, str folder):
        self.email = email
        self.password = password
        self.folder = folder

    @staticmethod
    cdef from_msgpack(bytes data):
        unpacked = unpackb(data, strict_map_key=False)
        return Credentials(
            unpacked.get("Email"),
            unpacked.get("Password"),
            unpacked.get("Folder"))