Implement MARC record writer/modifier that would allow to perform the following actions on matched MARC Record according to marcMappingDetails:
The MARC record writer/modifier should support modifications of subfields (add, insert, replace, remove) according to marcMappingDetails schema.
Traditional entity writers create entity from scratch, current writer/modifier should allow to set the original record value and make changes to it. marc4j lib should be used. Leader value should be recalculated. See quickMarc approach to MARC editing.
Adjust MappingManager implementation to support MARC-2-MARC mapping.