Prevent blob trigger to fire before blob is fully uploaded

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C#

#### Question

Is there a way to prevent a blob trigger from firing during the upload of an append blob or when a lease exists?

The issue asks whether Azure Functions blob triggers can be delayed during append-blob uploads or while a lease exists. No source file, test, or entry point is identified, so begin by locating the blob-trigger handling and its existing tests; done means establishing and documenting behavior that avoids firing before upload completion or during an active lease.

Written by the indexing model from the issue text.