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UserDataIndex
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.. js:data:: UserDataIndex

   .. rst-class:: sig-pretty-signature
   
      | UserDataIndex: (*number* \| *string*\ )
   
   This is the User Data Index for a node.
   
   Values of this type are unsigned 64 bit numbers.
   
   A value is of type ``number`` when it can be represented precisely as such.
   
   Otherwise a value is of type ``string``\ , where the string is the hex encoding of the index. The hex representation is in uppercase and does not have a leading ``0x``\ .
   




