Why do the remote methods doGetRemoteBuffers and doCreateRemoteBuffer include AddDependency and RemoveDependency, while the local methods do not?

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Why do the remote methods doGetRemoteBuffers and doCreateRemoteBuffer in vineyard include AddDependency and RemoveDependency? However, there are no related operations in the local methods doCreateBuffer and doCreateBuffers. There is only AddDependency but no RemoveDependency in doGetBuffers.
Please explain the specific role of Dependency in detail. If I perform AddDependency first and then RemoveDependency for all get and create operations, will there be any problems?