https://github.com/bytedeco/javacpp/wiki/Mapping-Recipes

http://bytedeco.org/javacpp/apidocs/org/bytedeco/javacpp/tools/Info.html
http://bytedeco.org/javacpp/apidocs/org/bytedeco/javacpp/tools/InfoMap.html
http://bytedeco.org/javacpp/apidocs/org/bytedeco/javacpp/tools/InfoMapper.html

https://github.com/bytedeco/javacpp/issues/261

import org.bytedeco.javacpp.tools.Info;
import org.bytedeco.javacpp.tools.InfoMap;
import org.bytedeco.javacpp.tools.InfoMapper;

public class SomeLibrary implements InfoMapper {
    @Override
    public void map(InfoMap infoMap) {
        infoMap
            .put(new Info("wchar_t", "WCHAR").cast().valueTypes("char", "int").pointerTypes("CharPointer", "IntPointer"))
            .put(new Info("std::wstring").annotations("@StdWString").valueTypes("CharPointer", "IntPointer"))
        ;
    }
    ...
}

https://github.com/bytedeco/javacpp/issues/144
https://github.com/bytedeco/javacpp/issues/162

public static class GetClipboardTextFn_Pointer extends FunctionPointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public    GetClipboardTextFn_Pointer(Pointer p) { super(p); }
    protected GetClipboardTextFn_Pointer() { allocate(); }
    private native void allocate();
    public native @Cast("const char*") BytePointer call(Pointer user_data);
}
@MemberGetter public native GetClipboardTextFn_Pointer GetClipboardTextFn();

https://github.com/bytedeco/javacpp/issues/29

StringVector
https://raw.githubusercontent.com/bytedeco/javacpp-presets/master/caffe/src/main/java/org/bytedeco/javacpp/caffe.java
    FieldDescriptorVector
https://github.com/bytedeco/javacpp/issues/22

misc
public native @Cast("char*")        BytePointer buffer(...);
public native @Cast("const char*")  BytePointer call(...);