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How to modify MergeContent's non expression properties to accept expression parameters?

New Contributor

Developer here trying to get his feet wet with modifying NiFi Processors. How challenging would it be to modify the MergeContent Processor for the following additions?

Would like to make the following non expression language properties to accept parameters/expression language:

  1. Minimum Number of Entries
  2. Maximum Number of Entries
  3. Max Bin Age

Or a way to past parameters into this Processor and apply parameters to these properties within the source code?