The following is a non-exhaustive list of MIME Types detected by default in NiFi:
An example value for the Config Body property that will identify a file whose contents start with "abcd" as MIME Type "custom/abcd"
and with extension ".abcd" would look like the following:
For a more complete list of Tika's default types (and additional details regarding customization of
the value for the Config Body property), please refer to
Apache Tika's documentation