@property<EOL><INDENT>def key(self):<DEDENT>
return self._key<EOL>
Gets the key of this V1Toleration.
Key is the taint key that the toleration applies to. Empty means match all taint keys. If the key is empty, operator must be Exists; this combination means to match all values and all keys.

:return: The key of this V1Toleration.
:rtype: str