Extract the technique feature of the following claim and make a list with index:1. A communication method, comprising:  obtaining, by an adaptor client, a southbound interface protocol type, wherein the adaptor client manages two or more protocol adaptors; and  selecting, by the adaptor client, a first protocol adaptor from the two or more protocol adaptors based on the southbound interface protocol type, wherein the first protocol adaptor implements a first protocol. Make sure to only use capital letters in your entire response.
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