CORE_MORE_FILE_MANAGE CORE Endpoint
  /rpc/core/?method=CORE_MORE_FILE_MANAGE  
  Create a file based on a previous advanced search.  It returns all the rows in a csv file.  
  PARAMETERS TYPE NOTES
  Bucket Numeric An Amazon S3 bucket as configured via SETUP_AWS_S3_BUCKET_MANAGE
  BucketFileName Text (1000) Defaults to [object title]/[object id]/[filename].
  More Numeric Mandatory.  The more ID from the advanced search.
  Object Numeric Defaults to the temporary object (176).
  ObjectContext Numeric Automatically creates a a temporary context ID if not set.
  RETURN  
  AttachmentLink Numeric
  Link A URL to the location of the csv for downloading.   eg can do a window.open() using it.