if len(e.And) > 1 ||
		len(e.And[0].Condition) > 1 ||
		e.And[0].Condition[0].Not != nil ||
		e.And[0].Condition[0].Operand.ConditionRHS != nil {
		return "", false
	}

	operand := e.And[0].Condition[0].Operand.Operand
	if operand.Right != nil ||
		operand.Left.Right != nil ||
		operand.Left.Left.Negated != nil ||
		operand.Left.Left.Primary.JPathExpr == nil {
		return "", false

}

func lcp(strs []string, pre bool) string {
	// short-circuit empty list
	if len(strs) == 0 {
		return ""
	}
	xfix := strs[0]
	// short-circuit single-element list
	if len(strs) == 1 {
		return xfix
	}
	// compare first to rest
	for _, str := range strs[1:] {
		xfixl := len(xfix)
		strl := len(str)
		// short-circuit empty strings
		if xfixl == 0 || strl == 0 {
			return ""
		}