question: web browsers may set the ` origin ' request header to ` null ' if a resource is loaded from the local file system . calling this method will enable a successful cors response with a wildcard for the cors response header ` access-control-allow-origin ' . concode_field_sep boolean noPreflightHeaders concode_elem_sep boolean enabled concode_elem_sep Optional<Pattern> pattern concode_elem_sep boolean allowNullOrigin concode_elem_sep Set<String> requestHeaders concode_elem_sep Set<HttpMethod> requestMethods concode_elem_sep boolean anyOrigin concode_elem_sep long maxAge concode_elem_sep Map<CharSequence,Callable<?>> preflightHeaders concode_elem_sep Optional<Set<String>> origins concode_elem_sep DateValueGenerator INSTANCE concode_elem_sep Object value concode_elem_sep boolean allowCredentials concode_elem_sep boolean shortCircuit concode_field_sep Netty4CorsConfigBuilder forPattern concode_elem_sep Netty4CorsConfigBuilder forOrigins concode_elem_sep Netty4CorsConfigBuilder allowedRequestMethods concode_elem_sep Netty4CorsConfigBuilder noPreflightResponseHeaders concode_elem_sep Object call concode_elem_sep Date call concode_elem_sep Netty4CorsConfigBuilder maxAge concode_elem_sep Netty4CorsConfig build concode_elem_sep Netty4CorsConfigBuilder forAnyOrigin concode_elem_sep Netty4CorsConfigBuilder disable concode_elem_sep Netty4CorsConfigBuilder forOrigin concode_elem_sep Netty4CorsConfigBuilder allowCredentials concode_elem_sep Netty4CorsConfigBuilder allowedRequestHeaders concode_elem_sep Netty4CorsConfigBuilder preflightResponseHeader concode_elem_sep Netty4CorsConfigBuilder preflightResponseHeader concode_elem_sep Netty4CorsConfigBuilder preflightResponseHeader concode_elem_sep Netty4CorsConfigBuilder shortCircuit
target: Netty4CorsConfigBuilder function ( ) { allowNullOrigin = true ; return this ; }