Now that the T-Engines provide parity with in process legacy transforms and metadata extract, the legacy transform code is now being removed. This will allow the documentation to be greatly simplified and a number of libraries to be removed.
Custom legacy transforms need to be moved to T-Engines. ACS 6 still provides a version where both may be run in parallel. New versions of the document transform engine (DTE) and media management (MM) are planned for ACS 7.
Added an optional extractMapping transform option to all metadata extractors to override the default one in the T-Engine.
In the case of the AGS AMP it extends the RFC822MetadataExtracter with its own class to specify a different set of document to system mappings. The class in the repo no longer does extractions, but is now used by the AsynchronousExtractor, which offloads extractions to T-Engines to obtain the mappings if it has been extended that are then passed to the T-Engine.
