/// <summary>
/// Creates a group builder that builds a group as part of the current group element.
/// </summary>
/// <param name="groupType">Group type.</param>
/// <returns>Group builder.</returns>
public GroupBuilder Group(GroupType groupType)
{
var builder = new GroupBuilder();
builder.GroupType(groupType);
_nestedBuilders.Add(builder);
return(builder);
}
/// <summary>
/// Creates a group builder that builds a group as the source of the negative existential element.
/// </summary>
/// <param name="groupType">Group type.</param>
/// <returns>Group builder.</returns>
public GroupBuilder Group(GroupType groupType)
{
AssertSingleSource();
var sourceBuilder = new GroupBuilder();
sourceBuilder.GroupType(groupType);
_sourceBuilder = sourceBuilder;
return(sourceBuilder);
}