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Resolver that return the latest n artifacts in a given channel.
Note that this Resolver is experimental and is subject to change in terms of both interface and implementation.
Initialize self. See help(type(self)) for accurate signature.
resolve( metadata_handler, source_channels )
Resolves artifacts from channels by querying MLMD.
metadata_handler: a read-only handler to query MLMD.
source_channels: a key -> channel dict which contains the info of the source channels.
a ResolveResult instance.