/// <summary>
/// Create new <see cref="PredicateBuilder"/>.
/// </summary>
public PredicateBuilder(SubjectBuilder forSubject, UriNode id)
{
_owner = forSubject;
_id = id;
_ctx = this;
}
/// <summary>
/// Create new <see cref="SubjectBuilder"/>.
/// </summary>
public SubjectBuilder(GraphBuilder forG, Node <UriOrBlank> id)
{
_owner = forG;
_id = id;
_ctx = forG;
}