Creation of Full Text Index via CDS

Hi,

I want to create a full text index via CDS. Therefore, I added the following annotation to the entity:

@SearchIndex: {         text: {         enabled: true,         name: 'content_fti',         phraseIndexRatio: 0.0,         async: true,         storeOriginalContent: true,         textAnalysis: {             mode: #EXTENDED,             languageDetection: ['ar','ca','hr','cs','da','nl','en','fa','fr','de','el','he','hu','it','ja','ko','nb','nn','pl','pt','ro','ru','sh','zh','sk','sl','es','sv','th','zf','tr','sr','id'],             mimeTypeElement: 'contenttype'         },         textMining: {             enabled: true         }     },     fuzzy: {         enabled: true         }    }

I get the following error when trying to activate the data model:

Cannot find sub artifact "textMining" in "sap.cds::SearchIndex.text"

Did I miss something or is something wrong with the syntax, there? I cannot see any mistake..

Thanks

Jan