def _storeArtifact(cls, content: IO[bytes], path: FilePath) -> None:
"""Verify and store an artifact from a temporary file.
If the file is valid, store it at the given path.
If the file is not valid, raise ValueError.
"""
cls.verify(content)
# Copy content.
content.seek(0, 0)
uploadPath = path.siblingExtension('.part')
path.parent().makedirs(ignoreExistingDirectory=True)
with uploadPath.open('wb') as out:
while True:
data = content.read(cls.putBlockSize)
if not data:
break
out.write(data)
out.flush()
fsync(out.fileno())
replace(uploadPath.path, path.path)
path.changed()
