def _get_attribute(self, offset):
        """Determines attribute type at the offset and returns \
        initialized attribute object.

        Returns:
            MftAttr: One of the attribute objects \
            (eg. :class:`~.mft_attribute.MftAttrFilename`).
            None: If atttribute type does not mach any one of the supported \
            attribute types.
        """
        attr_type = self.get_uint_le(offset)
        # Attribute length is in header @ offset 0x4
        length = self.get_uint_le(offset + 0x04)
        data = self.get_chunk(offset, length)

        return MftAttr.factory(attr_type, data)