文档库分组

[leonyu879]

• I checked to make sure that this is not a duplicate issue
• I'm submitting the request to the correct repository (for model requests

Is your feature request related to a problem? Please describe.

无法在不同分组中搜索，比如足球-文档列表、篮球-文档列表

Describe the solution you'd like

m.add_corpus(l, key='xx')
...
m.search(query, key='xx')

Describe alternatives you've considered

.

Additional Information

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