[TYPO3-Solr] Different Synonym files for each core?

[Jochen]

ext:solr 3.0.0
Solr 4.8.1

Currently synonym files are stored per language in 
typo3cores/conf/_schema_analysis_synonyms_[language].json

This way, all cores of one language are using the same synonym file.

Is there a way to store separate synonym files for each core? Use case: 
If you have multiple cores for one language and want to use different 
synonym configurations for each core.

One solution would be to add the name of the core to 
_schema_analysis_synonyms_[language].json or to store the file in the 
core directories.

Anybody knows how to achieve that?

Best regards
Jochen