boolean (final int newChildIndex, final IElementType @NotNull [] elementTypes) { if (newChildIndex == 0) return false; final Block previousBlock = getSubBlocks().get(newChildIndex - 1); if (!(previousBlock instanceof AbstractBlock)) return false; final IElementType previousElementType = ((AbstractBlock)previousBlock).getNode().getElementType(); return ArrayUtil.contains(previousElementType, elementTypes); }