@Override
	public int getPageSizeModMask() {
		return pageSizeModMask;
	}
Returns the mask used for masking off the upper bits of a value used to get the
 mod-page-size of the value (pageSizes must be a power of two for this to work)
@return the mask
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb2/pdbreader/msf/AbstractMsf.java