def METHOD_NAME(self):
    if self.name in ["CCompressedStaticFullVector3",
                     "CCompressedFullVector3", ]:
        self.size = 4 * 3
        self._type = '3f'
    elif self.name in ["CCompressedAnimVector3",
                       "CCompressedDeltaVector3",
                       "CCompressedStaticVector3"]:
        self.size = 2 * 3
        self._type = '3Y'
    elif self.name in ["CCompressedAnimQuaternion",
                       "CCompressedFullQuaternion",
                       "CCompressedStaticQuaternion"]:
        self.size = 6
        self._type = 'O'
    elif self.name in ["CCompressedStaticFloat", "CCompressedFullFloat"]:
        self.size = 4
        self._type = 'f'
    else:
        raise NotImplementedError(f"Unknown decoder type {self.name}")