protected PdfChildOperation(PdfOperation op) { _parent = op; }
public TextOperation(PdfOperation op) : base(op) { }
public ColorsOperation(PdfOperation op) : base(op) { }
public PathOperation(PdfOperation op) : base(op) { }
public GraphicsOperation(PdfOperation operation) : base(operation) { }
public LinesOperation(PdfOperation op) : base(op) { }