<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _create(cls, writer_spec, filename_suffix):
 """Helper method that actually creates the file in cloud storage."""

    writer = cls._open_file(writer_spec, filename_suffix)
    return cls(writer, writer_spec=writer_spec)