@Override
		public boolean hasNext() {
			if (it == null)
				return false;
			lock.acquire();
			try {
				return it.hasNext();
			}
			catch (IOException e) {
				program.dbError(e);
			}
			finally {
				lock.release();
			}
			return false;
		}
Get the specified number of original file bytes for the specified address.  Any offsets
not backed by file bytes will have a 0-byte value.
@param memory program memory
@param addr memory address
@param byteCount number of original file bytes to read
@return byte array of length byteCount
@throws IOException if an IO error occurs
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/reloc/RelocationManager.java