static DataFlavor[] getDataFlavors() {
		return new DataFlavor[] { ProgramTreeTransferable.localTreeNodeFlavor,
			GroupTransferable.localGroupFlavor, // a test data flavor
			DataFlavor.stringFlavor, // a test data flavor
			SelectionTransferable.localProgramSelectionFlavor };
	}
Get the data flavors that this tree supports.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramDnDTree.java