KVExpression
if ((exp = KVExpression.valueOf(raw)) == null)
KVExpression exp = null;
exp = new KVExpression(imp, m.group(3), m.group(4));
if (!(o instanceof KVExpression))
KVExpression other = (KVExpression) o;
if (!(o instanceof KVExpression))
KVExpression other = (KVExpression) o;
KVExpression kve = (KVExpression) getExpression();