question: create a new instance and return it . this method is for convenience in using the builder pattern within a single statement . concode_field_sep Set<String> extensions concode_elem_sep List<IOFileFilter> fileFilters concode_elem_sep Set<String> filenames concode_field_sep FileFilter build concode_elem_sep FileFilterBuilder addFilenames concode_elem_sep FileFilterBuilder addExtensions concode_elem_sep FileFilterBuilder addExtensions concode_elem_sep FileFilterBuilder addFileFilters
target: FileFilterBuilder function ( ) { return new FileFilterBuilder ( ) ; }