@Override
	public boolean isBitFieldAllowed() {
		return isSingleRowSelection();
	}
Moves the components between the start index (inclusive) and the end
 index (exclusive) to the new index (relative to the initial component set).

@param startIndex index of the starting component to move.
@param endIndex index of the ending component to move.
@return true if components are moved.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/StructureEditorModel.java