Voice
Constructors
Properties
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                  Identifier for this file, which can be used to download or reuse the file
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                  Optional. File size in bytes. It can be bigger than 2^31 and some programming languages may have difficulty/silent defects in interpreting it. But it has at most 52 significant bits, so a signed 64-bit integer or double-precision float type are safe for storing this value.
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                  Unique identifier for this file, which is supposed to be the same over time and for different bots. Can't be used to download or reuse the file.
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                  Optional. MIME type of the file as defined by sender