Method apply

java/org/apache/tomcat/util/openssl/pem_password_cb.java:39–39

(MemorySegment buf, int size, int rwflag, MemorySegment userdata)

     */
    public interface Function {
        int apply(MemorySegment buf, int size, int rwflag, MemorySegment userdata);
    }

    private static final FunctionDescriptor $DESC = FunctionDescriptor.of(openssl_h.C_INT, openssl_h.C_POINTER,