Sets whether or not the this's underlying stream is persistent.
If persist is true, the this will attempt to construct
messages/parts whose content will remain on disk rather than being loaded into memory so as to reduce memory usage. This is the default.
If persist is false, the this will always load message
content into memory.
Note: This attribute only serves as a hint to the this. If the underlying stream does not support seeking, then this attribute will be ignored.
By default, this feature is enabled if the underlying stream is seekable.
| this |
a Parser context |
| persist |
persist attribute |