private int setBitFieldOffset(Point point) {
		int bitOffset = placementComponent.getBitOffset(point);
		if (bitOffset >= 0) {
			// long cast is required for auto-box to Long object
			bitOffsetModel.setValue((long) bitOffset);
		}
		return bitOffset;
	}
@return true if actively adding a bitfield
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/BitFieldEditorPanel.java