private int skipOpen(int pos) {
		int val = editStream.getByte(pos) & (HEADER_MASK | HEADEREXTEND_MASK);
		if (val == ELEMENT_START) {
			return pos + 1;
		}
		else if (val == (ELEMENT_START | HEADEREXTEND_MASK)) {
			return pos + 2;
		}
		return -1;
	}
Return the position after the open element directive at the given position.
@param pos is the given position
@return the next position or -1 if the current byte is not an open directive
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/PatchPackedEncode.java