overrides the default prefix . concode_field_sep int partitionIndex concode_elem_sep String prefix concode_elem_sep String path concode_elem_sep String extension concode_field_sep DefaultFileNameFormat withPath concode_elem_sep void prepare concode_elem_sep DefaultFileNameFormat withExtension concode_elem_sep String getName concode_elem_sep String getPath
DefaultFileNameFormat function ( String arg0 ) { this . prefix = arg0 ; return this ; }