public long getPreviousMemberOffset() {
		return Long.parseLong((new String(ar_prvmem)).trim());
	}
The <code>ARHeader</code> class is used to store the per-object file 
 archive headers.  It can also create an XCOFF32 object for inspecting
 the object file data.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/xcoff/XCoffArchiveMemberHeader.java