boolean isBlockSeparatorIndex(BigInteger index) {
		return blockInfoMap.containsKey(index);
	}
Returns true if the given index is between blocks.
@param index the index to check if it is a block separator index
@return true if the given index is between blocks.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/IndexMap.java