question: return the name of the tabix index file for the provided vcf filename does not actually create an index concode_field_sep String STANDARD_INDEX_EXTENSION concode_field_sep String indexFile concode_elem_sep File indexFile concode_elem_sep String indexFile concode_elem_sep File indexFile
target: String function ( final String arg0 ) { return indexFile ( arg0 , TabixUtils . STANDARD_INDEX_EXTENSION ) ; }