private void Expand(Conjunction conjunction)
{
var wrap = !conjunction.RootConjunction;
if (conjunction.Any())
{
if (wrap)
{
builder.Append('(');
}
var head = true;
foreach (var item in conjunction)
{
if (head)
{
head = false;
}
else
{
builder.AppendLine().Append((item is Disjunction) ? "or " : "and ");
}
ExpandExpression(item);
}
if (wrap)
{
builder.Append(')');
}
}
}